21715024722 has 32 divisors (see below), whose sum is σ = 45771721920. Its totient is φ = 6848994240.

The previous prime is 21715024687. The next prime is 21715024733. The reversal of 21715024722 is 22742051712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22413 + ... + 209600.

It is an arithmetic number, because the mean of its divisors is an integer number (1430366310).

Almost surely, 2^21715024722 is an apocalyptic number.

21715024722 is an abundant number, since it is smaller than the sum of its proper divisors (24056697198).

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

21715024722 is a wasteful number, since it uses less digits than its factorization.

21715024722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232858.

The product of its (nonzero) digits is 15680, while the sum is 33.

The spelling of 21715024722 in words is "twenty-one billion, seven hundred fifteen million, twenty-four thousand, seven hundred twenty-two".