111121222122012 has 24 divisors (see below), whose sum is σ = 259396522375312. Its totient is φ = 37024168694400.

The previous prime is 111121222121993. The next prime is 111121222122037. The reversal of 111121222122012 is 210221222121111.

It is a self number, because there is not a number n which added to its sum of digits gives 111121222122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2029806439 + ... + 2029861182.

Almost surely, 2^{111121222122012} is an apocalyptic number.

111121222122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111121222122012 is an abundant number, since it is smaller than the sum of its proper divisors (148275300253300).

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

111121222122012 is a wasteful number, since it uses less digits than its factorization.

111121222122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059669909 (or 4059669907 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111121222122012 its reverse (210221222121111), we get a palindrome (321342444243123).

Subtracting 111121222122012 from its reverse (210221222121111), we obtain a palindrome (99099999999099).

The spelling of 111121222122012 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, twelve".