111100660531 has 24 divisors (see below), whose sum is σ = 129798586944. Its totient is φ = 94817923200.

The previous prime is 111100660529. The next prime is 111100660571. The reversal of 111100660531 is 135066001111.

It is not a de Polignac number, because 111100660531 - 2¹ = 111100660529 is a prime.

It is a super-2 number, since 2×111100660531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100660496 and 111100660505.

It is not an unprimeable number, because it can be changed into a prime (111100660571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15532806 + ... + 15539956.

It is an arithmetic number, because the mean of its divisors is an integer number (5408274456).

Almost surely, 2^111100660531 is an apocalyptic number.

111100660531 is a deficient number, since it is larger than the sum of its proper divisors (18697926413).

111100660531 is a wasteful number, since it uses less digits than its factorization.

111100660531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8491 (or 8484 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 25.

Adding to 111100660531 its reverse (135066001111), we get a palindrome (246166661642).

The spelling of 111100660531 in words is "one hundred eleven billion, one hundred million, six hundred sixty thousand, five hundred thirty-one".