1022220999972 has 48 divisors (see below), whose sum is σ = 2650264180480. Its totient is φ = 340732414944.

The previous prime is 1022220999967. The next prime is 1022220999973. The reversal of 1022220999972 is 2799990222201.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1022220999973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6258213 + ... + 6419475.

Almost surely, 2^{1022220999972} is an apocalyptic number.

1022220999972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1022220999972 is an abundant number, since it is smaller than the sum of its proper divisors (1628043180508).

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

1022220999972 is a wasteful number, since it uses less digits than its factorization.

1022220999972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219969 (or 219961 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 1022220999972 in words is "one trillion, twenty-two billion, two hundred twenty million, nine hundred ninety-nine thousand, nine hundred seventy-two".