1002001022220 has 96 divisors (see below), whose sum is σ = 3159388624896. Its totient is φ = 235073548800.

The previous prime is 1002001022219. The next prime is 1002001022237. The reversal of 1002001022220 is 222201002001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1002001022196 and 1002001022205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24466369 + ... + 24507288.

It is an arithmetic number, because the mean of its divisors is an integer number (32910298176).

Almost surely, 2^{1002001022220} is an apocalyptic number.

1002001022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002001022220 is an abundant number, since it is smaller than the sum of its proper divisors (2157387602676).

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

1002001022220 is a wasteful number, since it uses less digits than its factorization.

1002001022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48973711 (or 48973709 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1002001022220 its reverse (222201002001), we get a palindrome (1224202024221).

The spelling of 1002001022220 in words is "one trillion, two billion, one million, twenty-two thousand, two hundred twenty".