21982200220 has 24 divisors (see below), whose sum is σ = 46417670208. Its totient is φ = 8744299200.

The previous prime is 21982200197. The next prime is 21982200311. The reversal of 21982200220 is 2200228912.

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, 3032596 + ... + 3039835.

It is an arithmetic number, because the mean of its divisors is an integer number (1934069592).

Almost surely, 2^21982200220 is an apocalyptic number.

21982200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21982200220 is an abundant number, since it is smaller than the sum of its proper divisors (24435469988).

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

21982200220 is a wasteful number, since it uses less digits than its factorization.

21982200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072621 (or 6072619 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 21982200220 in words is "twenty-one billion, nine hundred eighty-two million, two hundred thousand, two hundred twenty".