2101112131228 has 72 divisors (see below), whose sum is σ = 4256898069200. Its totient is φ = 904236410880.

The previous prime is 2101112131193. The next prime is 2101112131231. The reversal of 2101112131228 is 8221312111012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15279676 + ... + 15416572.

Almost surely, 2^{2101112131228} is an apocalyptic number.

It is an amenable number.

2101112131228 is an abundant number, since it is smaller than the sum of its proper divisors (2155785937972).

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

2101112131228 is a wasteful number, since it uses less digits than its factorization.

2101112131228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138611 (or 138598 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

The spelling of 2101112131228 in words is "two trillion, one hundred one billion, one hundred twelve million, one hundred thirty-one thousand, two hundred twenty-eight".