113201251521 has 16 divisors (see below), whose sum is σ = 152224902720. Its totient is φ = 74823594560.

The previous prime is 113201251517. The next prime is 113201251523. The reversal of 113201251521 is 125152102311.

It is a cyclic number.

It is not a de Polignac number, because 113201251521 - 2² = 113201251517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113201251491 and 113201251500.

It is not an unprimeable number, because it can be changed into a prime (113201251523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305971 + ... + 565703.

It is an arithmetic number, because the mean of its divisors is an integer number (9514056420).

Almost surely, 2^113201251521 is an apocalyptic number.

It is an amenable number.

113201251521 is a deficient number, since it is larger than the sum of its proper divisors (39023651199).

113201251521 is a wasteful number, since it uses less digits than its factorization.

113201251521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260976.

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 113201251521 its reverse (125152102311), we get a palindrome (238353353832).

The spelling of 113201251521 in words is "one hundred thirteen billion, two hundred one million, two hundred fifty-one thousand, five hundred twenty-one".