202102101220 has 24 divisors (see below), whose sum is σ = 438105201408. Its totient is φ = 78233071200.

The previous prime is 202102101211. The next prime is 202102101277. The reversal of 202102101220 is 22101201202.

It is a happy number.

202102101220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 202102101220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162984946 + ... + 162986185.

It is an arithmetic number, because the mean of its divisors is an integer number (18254383392).

Almost surely, 2^202102101220 is an apocalyptic number.

202102101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102101220 is an abundant number, since it is smaller than the sum of its proper divisors (236003100188).

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

202102101220 is a wasteful number, since it uses less digits than its factorization.

202102101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325971171 (or 325971169 counting only the distinct ones).

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

Adding to 202102101220 its reverse (22101201202), we get a palindrome (224203302422).

The spelling of 202102101220 in words is "two hundred two billion, one hundred two million, one hundred one thousand, two hundred twenty".