2121332660004 has 24 divisors (see below), whose sum is σ = 4987560761568. Its totient is φ = 701713093120.

The previous prime is 2121332659997. The next prime is 2121332660021. The reversal of 2121332660004 is 4000662331212.

It is a super-2 number, since 2×2121332660004² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674722557 + ... + 674725700.

It is an arithmetic number, because the mean of its divisors is an integer number (207815031732).

Almost surely, 2^{2121332660004} is an apocalyptic number.

It is an amenable number.

2121332660004 is an abundant number, since it is smaller than the sum of its proper divisors (2866228101564).

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

2121332660004 is a wasteful number, since it uses less digits than its factorization.

2121332660004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349448395 (or 1349448393 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 2121332660004 its reverse (4000662331212), we get a palindrome (6121994991216).

The spelling of 2121332660004 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-two million, six hundred sixty thousand, four".