202112012220 has 24 divisors (see below), whose sum is σ = 565913634384. Its totient is φ = 53896536576.

The previous prime is 202112012203. The next prime is 202112012227. The reversal of 202112012220 is 22210211202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202112012220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112012227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684266709 + ... + 1684266828.

It is an arithmetic number, because the mean of its divisors is an integer number (23579734766).

Almost surely, 2^202112012220 is an apocalyptic number.

202112012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202112012220 is an abundant number, since it is smaller than the sum of its proper divisors (363801622164).

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

202112012220 is a wasteful number, since it uses less digits than its factorization.

202112012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368533549 (or 3368533547 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202112012220 its reverse (22210211202), we get a palindrome (224322223422).

The spelling of 202112012220 in words is "two hundred two billion, one hundred twelve million, twelve thousand, two hundred twenty".