2121022202313 has 16 divisors (see below), whose sum is σ = 3232196130176. Its totient is φ = 1211951825280.

The previous prime is 2121022202311. The next prime is 2121022202359. The reversal of 2121022202313 is 3132022201212.

It is not a de Polignac number, because 2121022202313 - 2¹ = 2121022202311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121022202313.

It is not an unprimeable number, because it can be changed into a prime (2121022202311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2106058 + ... + 2945763.

It is an arithmetic number, because the mean of its divisors is an integer number (202012258136).

Almost surely, 2^{2121022202313} is an apocalyptic number.

It is an amenable number.

2121022202313 is a deficient number, since it is larger than the sum of its proper divisors (1111173927863).

2121022202313 is a wasteful number, since it uses less digits than its factorization.

2121022202313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071824.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2121022202313 its reverse (3132022201212), we get a palindrome (5253044403525).

The spelling of 2121022202313 in words is "two trillion, one hundred twenty-one billion, twenty-two million, two hundred two thousand, three hundred thirteen".