202120102110220 has 48 divisors (see below), whose sum is σ = 485822115551808. Its totient is φ = 69193482082560.

The previous prime is 202120102110149. The next prime is 202120102110221. The reversal of 202120102110220 is 22011201021202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202120102110194 and 202120102110203.

It is not an unprimeable number, because it can be changed into a prime (202120102110221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1091976307 + ... + 1092161386.

It is an arithmetic number, because the mean of its divisors is an integer number (10121294073996).

Almost surely, 2^{202120102110220} is an apocalyptic number.

202120102110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120102110220 is an abundant number, since it is smaller than the sum of its proper divisors (283702013441588).

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

202120102110220 is a wasteful number, since it uses less digits than its factorization.

202120102110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184138370 (or 2184138368 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202120102110220 its reverse (22011201021202), we get a palindrome (224131303131422).

The spelling of 202120102110220 in words is "two hundred two trillion, one hundred twenty billion, one hundred two million, one hundred ten thousand, two hundred twenty".