21122504354 has 64 divisors (see below), whose sum is σ = 37295064576. Its totient is φ = 8785580544.

The previous prime is 21122504327. The next prime is 21122504399. The reversal of 21122504354 is 45340522112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46219694 + ... + 46220150.

It is an arithmetic number, because the mean of its divisors is an integer number (582735384).

Almost surely, 2^21122504354 is an apocalyptic number.

21122504354 is a deficient number, since it is larger than the sum of its proper divisors (16172560222).

21122504354 is a wasteful number, since it uses less digits than its factorization.

21122504354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 21122504354 in words is "twenty-one billion, one hundred twenty-two million, five hundred four thousand, three hundred fifty-four".