11112212021112 has 48 divisors (see below), whose sum is σ = 30100450784040. Its totient is φ = 3703470481728.

The previous prime is 11112212021087. The next prime is 11112212021167. The reversal of 11112212021112 is 21112021221111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12056458 + ... + 12945369.

Almost surely, 2^{11112212021112} is an apocalyptic number.

11112212021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11112212021112 is an abundant number, since it is smaller than the sum of its proper divisors (18988238762928).

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

11112212021112 is a wasteful number, since it uses less digits than its factorization.

11112212021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25008012 (or 25008005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11112212021112 its reverse (21112021221111), we get a palindrome (32224233242223).

The spelling of 11112212021112 in words is "eleven trillion, one hundred twelve billion, two hundred twelve million, twenty-one thousand, one hundred twelve".