1000021982000 has 40 divisors (see below), whose sum is σ = 2418053157312. Its totient is φ = 400008792000.

The previous prime is 1000021981997. The next prime is 1000021982059. The reversal of 1000021982000 is 2891200001.

It is a tau number, because it is divible by the number of its divisors (40).

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, 250003496 + ... + 250007495.

Almost surely, 2^{1000021982000} is an apocalyptic number.

1000021982000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000021982000 is an abundant number, since it is smaller than the sum of its proper divisors (1418031175312).

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

1000021982000 is an equidigital number, since it uses as much as digits as its factorization.

1000021982000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500011014 (or 500010998 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 1000021982000 in words is "one trillion, twenty-one million, nine hundred eighty-two thousand".