111212231108 has 72 divisors (see below), whose sum is σ = 228415919424. Its totient is φ = 47228448960.

The previous prime is 111212231107. The next prime is 111212231111. The reversal of 111212231108 is 801132212111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (111212231107) 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, 362510 + ... + 594842.

Almost surely, 2^111212231108 is an apocalyptic number.

It is an amenable number.

111212231108 is an abundant number, since it is smaller than the sum of its proper divisors (117203688316).

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

111212231108 is a wasteful number, since it uses less digits than its factorization.

111212231108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232425 (or 232412 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 111212231108 its reverse (801132212111), we get a palindrome (912344443219).

The spelling of 111212231108 in words is "one hundred eleven billion, two hundred twelve million, two hundred thirty-one thousand, one hundred eight".