21017366422 has 32 divisors (see below), whose sum is σ = 35089818624. Its totient is φ = 9375760800.

The previous prime is 21017366393. The next prime is 21017366449. The reversal of 21017366422 is 22466371012.

It is a super-2 number, since 2×21017366422² (a number of 21 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 15 ways as a sum of consecutive naturals, for example, 650797 + ... + 682327.

It is an arithmetic number, because the mean of its divisors is an integer number (1096556832).

Almost surely, 2^21017366422 is an apocalyptic number.

21017366422 is a deficient number, since it is larger than the sum of its proper divisors (14072452202).

21017366422 is a wasteful number, since it uses less digits than its factorization.

21017366422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32404.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 21017366422 in words is "twenty-one billion, seventeen million, three hundred sixty-six thousand, four hundred twenty-two".