21522779975074 has 16 divisors (see below), whose sum is σ = 36898596864000. Its totient is φ = 9223447905504.

The previous prime is 21522779975051. The next prime is 21522779975087. The reversal of 21522779975074 is 47057997722512.

It is a super-2 number, since 2×21522779975074² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49831899 + ... + 50261950.

It is an arithmetic number, because the mean of its divisors is an integer number (2306162304000).

Almost surely, 2^{21522779975074} is an apocalyptic number.

21522779975074 is a deficient number, since it is larger than the sum of its proper divisors (15375816888926).

21522779975074 is a wasteful number, since it uses less digits than its factorization.

21522779975074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100109217.

The product of its (nonzero) digits is 155584800, while the sum is 67.

The spelling of 21522779975074 in words is "twenty-one trillion, five hundred twenty-two billion, seven hundred seventy-nine million, nine hundred seventy-five thousand, seventy-four".