113201222521 has 2 divisors, whose sum is σ = 113201222522. Its totient is φ = 113201222520.

The previous prime is 113201222479. The next prime is 113201222569. The reversal of 113201222521 is 125222102311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69672242025 + 43528980496 = 263955^2 + 208636^2 .

It is a cyclic number.

It is not a de Polignac number, because 113201222521 - 2²⁷ = 113067004793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113201222492 and 113201222501.

It is not a weakly prime, because it can be changed into another prime (113201222591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56600611260 + 56600611261.

It is an arithmetic number, because the mean of its divisors is an integer number (56600611261).

Almost surely, 2^113201222521 is an apocalyptic number.

It is an amenable number.

113201222521 is a deficient number, since it is larger than the sum of its proper divisors (1).

113201222521 is an equidigital number, since it uses as much as digits as its factorization.

113201222521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 113201222521 its reverse (125222102311), we get a palindrome (238423324832).

The spelling of 113201222521 in words is "one hundred thirteen billion, two hundred one million, two hundred twenty-two thousand, five hundred twenty-one".