1022020120998 has 40 divisors (see below), whose sum is σ = 2290442438592. Its totient is φ = 340619773104.

The previous prime is 1022020120997. The next prime is 1022020121071. The reversal of 1022020120998 is 8990210202201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022020120991) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 543211 + ... + 1529417.

Almost surely, 2^{1022020120998} is an apocalyptic number.

1022020120998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1022020120998 is an abundant number, since it is smaller than the sum of its proper divisors (1268422317594).

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

1022020120998 is an equidigital number, since it uses as much as digits as its factorization.

1022020120998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992618 (or 992609 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 1022020120998 in words is "one trillion, twenty-two billion, twenty million, one hundred twenty thousand, nine hundred ninety-eight".