1002220220220 has 48 divisors (see below), whose sum is σ = 2826699972768. Its totient is φ = 265307929600.

The previous prime is 1002220220201. The next prime is 1002220220227. The reversal of 1002220220220 is 220220222001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1002220220220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002220220227) 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, 60954081 + ... + 60970520.

It is an arithmetic number, because the mean of its divisors is an integer number (58889582766).

Almost surely, 2^{1002220220220} is an apocalyptic number.

1002220220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002220220220 is an abundant number, since it is smaller than the sum of its proper divisors (1824479752548).

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

1002220220220 is a wasteful number, since it uses less digits than its factorization.

1002220220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121924750 (or 121924748 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 1002220220220 its reverse (220220222001), we get a palindrome (1222440442221).

The spelling of 1002220220220 in words is "one trillion, two billion, two hundred twenty million, two hundred twenty thousand, two hundred twenty".