21622203720620 has 24 divisors (see below), whose sum is σ = 47380829023584. Its totient is φ = 8272843162496.

The previous prime is 21622203720587. The next prime is 21622203720629. The reversal of 21622203720620 is 2602730222612.

It is not an unprimeable number, because it can be changed into a prime (21622203720629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23502394889 + ... + 23502395808.

It is an arithmetic number, because the mean of its divisors is an integer number (1974201209316).

Almost surely, 2^{21622203720620} is an apocalyptic number.

21622203720620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21622203720620 is an abundant number, since it is smaller than the sum of its proper divisors (25758625302964).

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

21622203720620 is a wasteful number, since it uses less digits than its factorization.

21622203720620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47004790729 (or 47004790727 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 21622203720620 in words is "twenty-one trillion, six hundred twenty-two billion, two hundred three million, seven hundred twenty thousand, six hundred twenty".