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122120202222021 = 349711818867737
BaseRepresentation
bin11011110001000101010011…
…010001011111100111000101
3121000101120120212022102212110
4123301011103101133213011
5112001304133232101041
61111421125120411233
734502615311545213
oct3361052321374705
9530346525272773
10122120202222021
1135a0298353a553
1211843868776b19
13531ab68a2cbb3
142222913a65cb3
15e1b960231516
hex6f115345f9c5

122120202222021 has 8 divisors (see below), whose sum is σ = 162830211965824. Its totient is φ = 81411830313120.

The previous prime is 122120202222017. The next prime is 122120202222079. The reversal of 122120202222021 is 120222202021221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122120202222021 - 22 = 122120202222017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120202222121) 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, 409284736 + ... + 409583001.

It is an arithmetic number, because the mean of its divisors is an integer number (20353776495728).

Almost surely, 2122120202222021 is an apocalyptic number.

It is an amenable number.

122120202222021 is a deficient number, since it is larger than the sum of its proper divisors (40710009743803).

122120202222021 is an equidigital number, since it uses as much as digits as its factorization.

122120202222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818917451.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 122120202222021 its reverse (120222202021221), we get a palindrome (242342404243242).

The spelling of 122120202222021 in words is "one hundred twenty-two trillion, one hundred twenty billion, two hundred two million, two hundred twenty-two thousand, twenty-one".

Divisors: 1 3 49711 149133 818867737 2456603211 40706734074007 122120202222021