202121124402 has 64 divisors (see below), whose sum is σ = 457524474624. Its totient is φ = 59174184960.

The previous prime is 202121124353. The next prime is 202121124407. The reversal of 202121124402 is 204421121202.

It is not an unprimeable number, because it can be changed into a prime (202121124407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 954493 + ... + 1146864.

It is an arithmetic number, because the mean of its divisors is an integer number (7148819916).

Almost surely, 2^202121124402 is an apocalyptic number.

202121124402 is an abundant number, since it is smaller than the sum of its proper divisors (255403350222).

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

202121124402 is a wasteful number, since it uses less digits than its factorization.

202121124402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101443.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202121124402 its reverse (204421121202), we get a palindrome (406542245604).

The spelling of 202121124402 in words is "two hundred two billion, one hundred twenty-one million, one hundred twenty-four thousand, four hundred two".