1022999890920 has 128 divisors (see below), whose sum is σ = 3530968416000. Its totient is φ = 232259198976.

The previous prime is 1022999890879. The next prime is 1022999890943. The reversal of 1022999890920 is 290989992201.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3961609 + ... + 4211928.

It is an arithmetic number, because the mean of its divisors is an integer number (27585690750).

Almost surely, 2^{1022999890920} is an apocalyptic number.

1022999890920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022999890920 is an abundant number, since it is smaller than the sum of its proper divisors (2507968525080).

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

1022999890920 is a wasteful number, since it uses less digits than its factorization.

1022999890920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8173707 (or 8173703 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 60.

The spelling of 1022999890920 in words is "one trillion, twenty-two billion, nine hundred ninety-nine million, eight hundred ninety thousand, nine hundred twenty".