20221020001980 has 192 divisors, whose sum is σ = 73075599528960. Its totient is φ = 4546177747200.

The previous prime is 20221020001943. The next prime is 20221020001981. The reversal of 20221020001980 is 8910002012202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221020001981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43617586 + ... + 44078745.

It is an arithmetic number, because the mean of its divisors is an integer number (380602080880).

Almost surely, 2^{20221020001980} is an apocalyptic number.

20221020001980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221020001980 is an abundant number, since it is smaller than the sum of its proper divisors (52854579526980).

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

20221020001980 is a wasteful number, since it uses less digits than its factorization.

20221020001980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87696417 (or 87696409 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 20221020001980 in words is "twenty trillion, two hundred twenty-one billion, twenty million, one thousand, nine hundred eighty".