21421373702334 has 64 divisors (see below), whose sum is σ = 45394817402880. Its totient is φ = 6729544080000.

The previous prime is 21421373702203. The next prime is 21421373702381. The reversal of 21421373702334 is 43320737312412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8200644 + ... + 10492535.

It is an arithmetic number, because the mean of its divisors is an integer number (709294021920).

Almost surely, 2^{21421373702334} is an apocalyptic number.

21421373702334 is an abundant number, since it is smaller than the sum of its proper divisors (23973443700546).

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

21421373702334 is a wasteful number, since it uses less digits than its factorization.

21421373702334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18693377.

The product of its (nonzero) digits is 508032, while the sum is 42.

The spelling of 21421373702334 in words is "twenty-one trillion, four hundred twenty-one billion, three hundred seventy-three million, seven hundred two thousand, three hundred thirty-four".