2121200020012 has 12 divisors (see below), whose sum is σ = 3712262246280. Its totient is φ = 1060553663936.

The previous prime is 2121200019941. The next prime is 2121200020031. The reversal of 2121200020012 is 2100200021212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121200019974 and 2121200020001.

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, 11483437 + ... + 11666692.

It is an arithmetic number, because the mean of its divisors is an integer number (309355187190).

Almost surely, 2^{2121200020012} is an apocalyptic number.

It is an amenable number.

2121200020012 is a deficient number, since it is larger than the sum of its proper divisors (1591062226268).

2121200020012 is a wasteful number, since it uses less digits than its factorization.

2121200020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23173040 (or 23173038 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2121200020012 its reverse (2100200021212), we get a palindrome (4221400041224).

The spelling of 2121200020012 in words is "two trillion, one hundred twenty-one billion, two hundred million, twenty thousand, twelve".