2121242134012 has 12 divisors (see below), whose sum is σ = 3712193146816. Its totient is φ = 1060615520640.

The previous prime is 2121242133991. The next prime is 2121242134057. The reversal of 2121242134012 is 2104312421212.

It is a super-2 number, since 2×2121242134012² (a number of 25 digits) contains 22 as substring.

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, 456789 + ... + 2109772.

Almost surely, 2^{2121242134012} is an apocalyptic number.

It is an amenable number.

2121242134012 is a deficient number, since it is larger than the sum of its proper divisors (1590951012804).

2121242134012 is a wasteful number, since it uses less digits than its factorization.

2121242134012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773188 (or 2773186 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2121242134012 its reverse (2104312421212), we get a palindrome (4225554555224).

The spelling of 2121242134012 in words is "two trillion, one hundred twenty-one billion, two hundred forty-two million, one hundred thirty-four thousand, twelve".