111112521522 has 32 divisors (see below), whose sum is σ = 224865979200. Its totient is φ = 36597884928.

The previous prime is 111112521473. The next prime is 111112521587. The reversal of 111112521522 is 225125211111.

It is a junction number, because it is equal to n+sod(n) for n = 111112521492 and 111112521501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 777298 + ... + 909074.

It is an arithmetic number, because the mean of its divisors is an integer number (7027061850).

Almost surely, 2^111112521522 is an apocalyptic number.

111112521522 is an abundant number, since it is smaller than the sum of its proper divisors (113753457678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111112521522 is a wasteful number, since it uses less digits than its factorization.

111112521522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133450.

The product of its digits is 400, while the sum is 24.

Adding to 111112521522 its reverse (225125211111), we get a palindrome (336237732633).

The spelling of 111112521522 in words is "one hundred eleven billion, one hundred twelve million, five hundred twenty-one thousand, five hundred twenty-two".