202120111220 has 48 divisors (see below), whose sum is σ = 430170628608. Its totient is φ = 79764489600.

The previous prime is 202120111201. The next prime is 202120111273. The reversal of 202120111220 is 22111021202.

202120111220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 202120111195 and 202120111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394877 + ... + 748443.

It is an arithmetic number, because the mean of its divisors is an integer number (8961888096).

Almost surely, 2^202120111220 is an apocalyptic number.

202120111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120111220 is an abundant number, since it is smaller than the sum of its proper divisors (228050517388).

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

202120111220 is a wasteful number, since it uses less digits than its factorization.

202120111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353960 (or 353958 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202120111220 its reverse (22111021202), we get a palindrome (224231132422).

The spelling of 202120111220 in words is "two hundred two billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty".