202120432122 has 96 divisors (see below), whose sum is σ = 483914787840. Its totient is φ = 56088046560.

The previous prime is 202120432103. The next prime is 202120432133. The reversal of 202120432122 is 221234021202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1754329 + ... + 1865987.

It is an arithmetic number, because the mean of its divisors is an integer number (5040779040).

Almost surely, 2^202120432122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202120432122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241957393920).

202120432122 is an abundant number, since it is smaller than the sum of its proper divisors (281794355718).

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

202120432122 is a wasteful number, since it uses less digits than its factorization.

202120432122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111856 (or 111849 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 202120432122 its reverse (221234021202), we get a palindrome (423354453324).

The spelling of 202120432122 in words is "two hundred two billion, one hundred twenty million, four hundred thirty-two thousand, one hundred twenty-two".