1002210012220 has 72 divisors (see below), whose sum is σ = 2223647521200. Its totient is φ = 379373497344.

The previous prime is 1002210012187. The next prime is 1002210012253. The reversal of 1002210012220 is 222100122001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1002210012187) and next prime (1002210012253).

It is a self number, because there is not a number n which added to its sum of digits gives 1002210012220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6632671 + ... + 6782089.

It is an arithmetic number, because the mean of its divisors is an integer number (30883993350).

Almost surely, 2^{1002210012220} is an apocalyptic number.

1002210012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002210012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111823760600).

1002210012220 is an abundant number, since it is smaller than the sum of its proper divisors (1221437508980).

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

1002210012220 is a wasteful number, since it uses less digits than its factorization.

1002210012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150395 (or 150374 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1002210012220 its reverse (222100122001), we get a palindrome (1224310134221).

The spelling of 1002210012220 in words is "one trillion, two billion, two hundred ten million, twelve thousand, two hundred twenty".