111101212112 has 20 divisors (see below), whose sum is σ = 234827562336. Its totient is φ = 50500550880.

The previous prime is 111101212111. The next prime is 111101212133. The reversal of 111101212112 is 211212101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315628268 + ... + 315628619.

Almost surely, 2^111101212112 is an apocalyptic number.

It is an amenable number.

111101212112 is an abundant number, since it is smaller than the sum of its proper divisors (123726350224).

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

111101212112 is a wasteful number, since it uses less digits than its factorization.

111101212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631256906 (or 631256900 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111101212112 its reverse (211212101111), we get a palindrome (322313313223).

The spelling of 111101212112 in words is "one hundred eleven billion, one hundred one million, two hundred twelve thousand, one hundred twelve".