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1130021012221 = 2768940811189
BaseRepresentation
bin10000011100011010100…
…000000100001011111101
311000000210002220012110021
4100130122200010023331
5122003240334342341
62223042520012141
7144432655056343
oct20343240041375
94000702805407
101130021012221
113a626a4468a2
12163009901051
138273961942a
143c99c621993
151e5db37a9d1
hex1071a8042fd

1130021012221 has 4 divisors (see below), whose sum is σ = 1130061851100. Its totient is φ = 1129980173344.

The previous prime is 1130021012201. The next prime is 1130021012249. The reversal of 1130021012221 is 1222101200311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 268827732196 + 861193280025 = 518486^2 + 928005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130021012221 - 237 = 992582058749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130021012195 and 1130021012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130021012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20377906 + ... + 20433283.

It is an arithmetic number, because the mean of its divisors is an integer number (282515462775).

Almost surely, 21130021012221 is an apocalyptic number.

It is an amenable number.

1130021012221 is a deficient number, since it is larger than the sum of its proper divisors (40838879).

1130021012221 is an equidigital number, since it uses as much as digits as its factorization.

1130021012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40838878.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1130021012221 its reverse (1222101200311), we get a palindrome (2352122212532).

The spelling of 1130021012221 in words is "one trillion, one hundred thirty billion, twenty-one million, twelve thousand, two hundred twenty-one".

Divisors: 1 27689 40811189 1130021012221