9902001012220 has 48 divisors (see below), whose sum is σ = 21703708918080. Its totient is φ = 3787646905856.

The previous prime is 9902001012217. The next prime is 9902001012307. The reversal of 9902001012220 is 222101002099.

9902001012220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836065 + ... + 4528024.

It is an arithmetic number, because the mean of its divisors is an integer number (452160602460).

Almost surely, 2^{9902001012220} is an apocalyptic number.

It is an amenable number.

9902001012220 is an abundant number, since it is smaller than the sum of its proper divisors (11801707905860).

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

9902001012220 is a wasteful number, since it uses less digits than its factorization.

9902001012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368134 (or 5368132 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 9902001012220 in words is "nine trillion, nine hundred two billion, one million, twelve thousand, two hundred twenty".