202120002 has 48 divisors (see below), whose sum is σ = 522493920. Its totient is φ = 57747816.

The previous prime is 202119989. The next prime is 202120091. The reversal of 202120002 is 200021202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35548 + ... + 40839.

It is an arithmetic number, because the mean of its divisors is an integer number (10885290).

Almost surely, 2^202120002 is an apocalyptic number.

202120002 is an abundant number, since it is smaller than the sum of its proper divisors (320373918).

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

202120002 is a wasteful number, since it uses less digits than its factorization.

202120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76412 (or 76399 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 202120002 is about 14216.8914323772. The cubic root of 202120002 is about 586.8625971922.

Adding to 202120002 its reverse (200021202), we get a palindrome (402141204).

The spelling of 202120002 in words is "two hundred two million, one hundred twenty thousand, two".