20202221220210 has 96 divisors (see below), whose sum is σ = 55864924577280. Its totient is φ = 5047624272384.

The previous prime is 20202221220143. The next prime is 20202221220229. The reversal of 20202221220210 is 1202212220202.

20202221220210 is a `hidden beast` number, since 2 + 0 + 202 + 221 + 220 + 21 + 0 = 666.

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 47 ways as a sum of consecutive naturals, for example, 29264340 + ... + 29946719.

It is an arithmetic number, because the mean of its divisors is an integer number (581926297680).

Almost surely, 2^{20202221220210} is an apocalyptic number.

20202221220210 is an abundant number, since it is smaller than the sum of its proper divisors (35662703357070).

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

20202221220210 is a wasteful number, since it uses less digits than its factorization.

20202221220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59211312 (or 59211309 counting only the distinct ones).

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

Adding to 20202221220210 its reverse (1202212220202), we get a palindrome (21404433440412).

The spelling of 20202221220210 in words is "twenty trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".