18221032210020 has 96 divisors (see below), whose sum is σ = 53753968300032. Its totient is φ = 4602560400768.

The previous prime is 18221032209979. The next prime is 18221032210033. The reversal of 18221032210020 is 2001223012281.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63953232 + ... + 64237511.

It is an arithmetic number, because the mean of its divisors is an integer number (559937169792).

Almost surely, 2^{18221032210020} is an apocalyptic number.

18221032210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18221032210020 is an abundant number, since it is smaller than the sum of its proper divisors (35532936090012).

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

18221032210020 is a wasteful number, since it uses less digits than its factorization.

18221032210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128190881 (or 128190879 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The spelling of 18221032210020 in words is "eighteen trillion, two hundred twenty-one billion, thirty-two million, two hundred ten thousand, twenty".