202121440113 has 16 divisors (see below), whose sum is σ = 272796992640. Its totient is φ = 133099798656.

The previous prime is 202121440069. The next prime is 202121440117. The reversal of 202121440113 is 311044121202.

It is not a de Polignac number, because 202121440113 - 2⁹ = 202121439601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202121440113.

It is not an unprimeable number, because it can be changed into a prime (202121440117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113445 + ... + 645842.

It is an arithmetic number, because the mean of its divisors is an integer number (17049812040).

Almost surely, 2^202121440113 is an apocalyptic number.

It is an amenable number.

202121440113 is a deficient number, since it is larger than the sum of its proper divisors (70675552527).

202121440113 is an equidigital number, since it uses as much as digits as its factorization.

202121440113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760376.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 202121440113 its reverse (311044121202), we get a palindrome (513165561315).

The spelling of 202121440113 in words is "two hundred two billion, one hundred twenty-one million, four hundred forty thousand, one hundred thirteen".