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121220111221029 = 334489633748927
BaseRepresentation
bin11011100011111111000001…
…101010110100000100100101
3120220012112021222022000202000
4123203333001222310010211
5111342032241433033104
61105451430022435513
734350602234352522
oct3343770152640445
9526175258260660
10121220111221029
1135696184645327
1211719329b92b99
135284013461362
1421d1128552149
15e0332ec2b639
hex6e3fc1ab4125

121220111221029 has 8 divisors (see below), whose sum is σ = 179585349957120. Its totient is φ = 80813407480668.

The previous prime is 121220111221007. The next prime is 121220111221031. The reversal of 121220111221029 is 920122111022121.

121220111221029 is a `hidden beast` number, since 1 + 212 + 201 + 1 + 1 + 221 + 0 + 29 = 666.

121220111221029 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 121220111221029 - 236 = 121151391744293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4489633748927 = 121220111221029 / (1 + 2 + 1 + 2 + 2 + 0 + 1 + 1 + 1 + 2 + 2 + 1 + 0 + 2 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 121220111220993 and 121220111221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220111229029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2244816874437 + ... + 2244816874490.

It is an arithmetic number, because the mean of its divisors is an integer number (22448168744640).

Almost surely, 2121220111221029 is an apocalyptic number.

It is an amenable number.

121220111221029 is a deficient number, since it is larger than the sum of its proper divisors (58365238736091).

121220111221029 is an equidigital number, since it uses as much as digits as its factorization.

121220111221029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489633748936 (or 4489633748930 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 121220111221029 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, twenty-nine".

Divisors: 1 3 9 27 4489633748927 13468901246781 40406703740343 121220111221029