111513211252 has 24 divisors (see below), whose sum is σ = 202678197120. Its totient is φ = 53645369280.

The previous prime is 111513211241. The next prime is 111513211259. The reversal of 111513211252 is 252112315111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111513211259) 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, 5015649 + ... + 5037832.

It is an arithmetic number, because the mean of its divisors is an integer number (8444924880).

Almost surely, 2^111513211252 is an apocalyptic number.

It is an amenable number.

111513211252 is a deficient number, since it is larger than the sum of its proper divisors (91164985868).

111513211252 is a wasteful number, since it uses less digits than its factorization.

111513211252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053591 (or 10053589 counting only the distinct ones).

The product of its digits is 600, while the sum is 25.

Adding to 111513211252 its reverse (252112315111), we get a palindrome (363625526363).

The spelling of 111513211252 in words is "one hundred eleven billion, five hundred thirteen million, two hundred eleven thousand, two hundred fifty-two".