21622098820 has 48 divisors (see below), whose sum is σ = 52099867008. Its totient is φ = 7383744000.

The previous prime is 21622098803. The next prime is 21622098833. The reversal of 21622098820 is 2889022612.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272517 + ... + 342796.

It is an arithmetic number, because the mean of its divisors is an integer number (1085413896).

Almost surely, 2^21622098820 is an apocalyptic number.

21622098820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21622098820 is an abundant number, since it is smaller than the sum of its proper divisors (30477768188).

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

21622098820 is a wasteful number, since it uses less digits than its factorization.

21622098820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615580 (or 615578 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 21622098820 in words is "twenty-one billion, six hundred twenty-two million, ninety-eight thousand, eight hundred twenty".