21573465122 has 16 divisors (see below), whose sum is σ = 35305444512. Its totient is φ = 9805173120.

The previous prime is 21573465097. The next prime is 21573465131. The reversal of 21573465122 is 22156437512.

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, 218738 + ... + 301650.

It is an arithmetic number, because the mean of its divisors is an integer number (2206590282).

Almost surely, 2^21573465122 is an apocalyptic number.

21573465122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21573465122 is a deficient number, since it is larger than the sum of its proper divisors (13731979390).

21573465122 is a wasteful number, since it uses less digits than its factorization.

21573465122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94753.

The product of its digits is 100800, while the sum is 38.

The spelling of 21573465122 in words is "twenty-one billion, five hundred seventy-three million, four hundred sixty-five thousand, one hundred twenty-two".