1020012099980 has 48 divisors (see below), whose sum is σ = 2159136000000. Its totient is φ = 404756569536.

The previous prime is 1020012099959. The next prime is 1020012100001. The reversal of 1020012099980 is 899902100201.

It is an interprime number because it is at equal distance from previous prime (1020012099959) and next prime (1020012100001).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1160021 + ... + 1840019.

It is an arithmetic number, because the mean of its divisors is an integer number (44982000000).

Almost surely, 2^{1020012099980} is an apocalyptic number.

1020012099980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020012099980 is an abundant number, since it is smaller than the sum of its proper divisors (1139123900020).

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

1020012099980 is a wasteful number, since it uses less digits than its factorization.

1020012099980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680606 (or 680604 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 1020012099980 in words is "one trillion, twenty billion, twelve million, ninety-nine thousand, nine hundred eighty".