21274670622 has 32 divisors (see below), whose sum is σ = 42792839712. Its totient is φ = 7051014144.

The previous prime is 21274670531. The next prime is 21274670623. The reversal of 21274670622 is 22607647212.

It is a happy number.

It is a super-2 number, since 2×21274670622² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21274670623) by changing a digit.

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, 2864658 + ... + 2872074.

It is an arithmetic number, because the mean of its divisors is an integer number (1337276241).

Almost surely, 2^21274670622 is an apocalyptic number.

21274670622 is an abundant number, since it is smaller than the sum of its proper divisors (21518169090).

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

21274670622 is a wasteful number, since it uses less digits than its factorization.

21274670622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092.

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 21274670622 in words is "twenty-one billion, two hundred seventy-four million, six hundred seventy thousand, six hundred twenty-two".