2121200122012 has 12 divisors (see below), whose sum is σ = 3772954315816. Its totient is φ = 1043213174640.

The previous prime is 2121200121979. The next prime is 2121200122021. The reversal of 2121200122012 is 2102210021212.

It is a happy number.

It is a congruent number.

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, 4346721318 + ... + 4346721805.

Almost surely, 2^{2121200122012} is an apocalyptic number.

It is an amenable number.

2121200122012 is a deficient number, since it is larger than the sum of its proper divisors (1651754193804).

2121200122012 is a wasteful number, since it uses less digits than its factorization.

2121200122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8693443188 (or 8693443186 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121200122012 its reverse (2102210021212), we get a palindrome (4223410143224).

The spelling of 2121200122012 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred twenty-two thousand, twelve".