202102210220 has 12 divisors (see below), whose sum is σ = 424414641504. Its totient is φ = 80840884080.

The previous prime is 202102210217. The next prime is 202102210231. The reversal of 202102210220 is 22012201202.

It is a junction number, because it is equal to n+sod(n) for n = 202102210195 and 202102210204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5052555236 + ... + 5052555275.

It is an arithmetic number, because the mean of its divisors is an integer number (35367886792).

Almost surely, 2^202102210220 is an apocalyptic number.

202102210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102210220 is an abundant number, since it is smaller than the sum of its proper divisors (222312431284).

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

202102210220 is a wasteful number, since it uses less digits than its factorization.

202102210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105110520 (or 10105110518 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202102210220 its reverse (22012201202), we get a palindrome (224114411422).

The spelling of 202102210220 in words is "two hundred two billion, one hundred two million, two hundred ten thousand, two hundred twenty".