111045525521 has 8 divisors (see below), whose sum is σ = 132426962304. Its totient is φ = 91043536320.

The previous prime is 111045525473. The next prime is 111045525523. The reversal of 111045525521 is 125525540111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111045525521 is a prime.

It is a super-2 number, since 2×111045525521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111045525523) 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, 344861720 + ... + 344862041.

It is an arithmetic number, because the mean of its divisors is an integer number (16553370288).

Almost surely, 2^111045525521 is an apocalyptic number.

It is an amenable number.

111045525521 is a deficient number, since it is larger than the sum of its proper divisors (21381436783).

111045525521 is an equidigital number, since it uses as much as digits as its factorization.

111045525521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689723791.

The product of its (nonzero) digits is 10000, while the sum is 32.

The spelling of 111045525521 in words is "one hundred eleven billion, forty-five million, five hundred twenty-five thousand, five hundred twenty-one".