202000202120 has 16 divisors (see below), whose sum is σ = 454500454860. Its totient is φ = 80800080832.

The previous prime is 202000202113. The next prime is 202000202123. The reversal of 202000202120 is 21202000202.

It can be written as a sum of positive squares in 2 ways, for example, as 199185475204 + 2814726916 = 446302^2 + 53054^2 .

It is not an unprimeable number, because it can be changed into a prime (202000202123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525002487 + ... + 2525002566.

Almost surely, 2^202000202120 is an apocalyptic number.

202000202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202000202120 is an abundant number, since it is smaller than the sum of its proper divisors (252500252740).

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

202000202120 is a wasteful number, since it uses less digits than its factorization.

202000202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050005064 (or 5050005060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 202000202120 its reverse (21202000202), we get a palindrome (223202202322).

The spelling of 202000202120 in words is "two hundred two billion, two hundred two thousand, one hundred twenty".