2102221220202 has 24 divisors (see below), whose sum is σ = 4563231911940. Its totient is φ = 699445134720.

The previous prime is 2102221220159. The next prime is 2102221220213. The reversal of 2102221220202 is 2020221222012.

2102221220202 is a `hidden beast` number, since 21 + 0 + 2 + 221 + 220 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2069601609321 + 32619610881 = 1438611^2 + 180609^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107929327 + ... + 107948802.

Almost surely, 2^{2102221220202} is an apocalyptic number.

2102221220202 is an abundant number, since it is smaller than the sum of its proper divisors (2461010691738).

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

2102221220202 is a wasteful number, since it uses less digits than its factorization.

2102221220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215878678 (or 215878675 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2102221220202 its reverse (2020221222012), we get a palindrome (4122442442214).

The spelling of 2102221220202 in words is "two trillion, one hundred two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred two".