111220254712 has 32 divisors (see below), whose sum is σ = 246017157120. Its totient is φ = 46128215520.

The previous prime is 111220254703. The next prime is 111220254757. The reversal of 111220254712 is 217452022111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32031748 + ... + 32035219.

It is an arithmetic number, because the mean of its divisors is an integer number (7688036160).

Almost surely, 2^111220254712 is an apocalyptic number.

It is an amenable number.

111220254712 is an abundant number, since it is smaller than the sum of its proper divisors (134796902408).

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

111220254712 is a wasteful number, since it uses less digits than its factorization.

111220254712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64067011 (or 64067007 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 111220254712 its reverse (217452022111), we get a palindrome (328672276823).

The spelling of 111220254712 in words is "one hundred eleven billion, two hundred twenty million, two hundred fifty-four thousand, seven hundred twelve".