21436517022 has 16 divisors (see below), whose sum is σ = 45129509760. Its totient is φ = 6769426392.

The previous prime is 21436516973. The next prime is 21436517059. The reversal of 21436517022 is 22071563412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94019698 + ... + 94019925.

It is an arithmetic number, because the mean of its divisors is an integer number (2820594360).

Almost surely, 2^21436517022 is an apocalyptic number.

21436517022 is an abundant number, since it is smaller than the sum of its proper divisors (23692992738).

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

21436517022 is a wasteful number, since it uses less digits than its factorization.

21436517022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188039647.

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 21436517022 in words is "twenty-one billion, four hundred thirty-six million, five hundred seventeen thousand, twenty-two".