21354622704724 has 12 divisors (see below), whose sum is σ = 38239673215744. Its totient is φ = 10429001785944.

The previous prime is 21354622704697. The next prime is 21354622704739. The reversal of 21354622704724 is 42740722645312.

It is a super-2 number, since 2×21354622704724² (a number of 27 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, 62077391412 + ... + 62077391755.

Almost surely, 2^{21354622704724} is an apocalyptic number.

It is an amenable number.

21354622704724 is a deficient number, since it is larger than the sum of its proper divisors (16885050511020).

21354622704724 is a wasteful number, since it uses less digits than its factorization.

21354622704724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124154783214 (or 124154783212 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 49.

The spelling of 21354622704724 in words is "twenty-one trillion, three hundred fifty-four billion, six hundred twenty-two million, seven hundred four thousand, seven hundred twenty-four".