202121442402 has 32 divisors (see below), whose sum is σ = 441257656320. Its totient is φ = 61212058320.

The previous prime is 202121442373. The next prime is 202121442487. The reversal of 202121442402 is 204244121202.

It is a happy 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, 811002 + ... + 1030517.

It is an arithmetic number, because the mean of its divisors is an integer number (13789301760).

Almost surely, 2^202121442402 is an apocalyptic number.

202121442402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202121442402 is an abundant number, since it is smaller than the sum of its proper divisors (239136213918).

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

202121442402 is a wasteful number, since it uses less digits than its factorization.

202121442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843198.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 202121442402 its reverse (204244121202), we get a palindrome (406365563604).

The spelling of 202121442402 in words is "two hundred two billion, one hundred twenty-one million, four hundred forty-two thousand, four hundred two".