2121020112012 has 12 divisors (see below), whose sum is σ = 4949046928056. Its totient is φ = 707006704000.

The previous prime is 2121020111909. The next prime is 2121020112047. The reversal of 2121020112012 is 2102110201212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2121020111982 and 2121020112000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88375837989 + ... + 88375838012.

It is an arithmetic number, because the mean of its divisors is an integer number (412420577338).

Almost surely, 2^{2121020112012} is an apocalyptic number.

It is an amenable number.

2121020112012 is an abundant number, since it is smaller than the sum of its proper divisors (2828026816044).

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

2121020112012 is a wasteful number, since it uses less digits than its factorization.

2121020112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176751676008 (or 176751676006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121020112012 its reverse (2102110201212), we get a palindrome (4223130313224).

The spelling of 2121020112012 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred twelve thousand, twelve".