1002002022220 has 24 divisors (see below), whose sum is σ = 2110842128304. Its totient is φ = 399536450496.

The previous prime is 1002002022209. The next prime is 1002002022239. The reversal of 1002002022220 is 222202002001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002002022220.

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, 79015902 + ... + 79028581.

It is an arithmetic number, because the mean of its divisors is an integer number (87951755346).

Almost surely, 2^{1002002022220} is an apocalyptic number.

1002002022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002002022220 is an abundant number, since it is smaller than the sum of its proper divisors (1108840106084).

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

1002002022220 is a wasteful number, since it uses less digits than its factorization.

1002002022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158044809 (or 158044807 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 1002002022220 its reverse (222202002001), we get a palindrome (1224204024221).

The spelling of 1002002022220 in words is "one trillion, two billion, two million, twenty-two thousand, two hundred twenty".