2313220201221 has 16 divisors (see below), whose sum is σ = 3191349436928. Its totient is φ = 1488855211200.

The previous prime is 2313220201147. The next prime is 2313220201241. The reversal of 2313220201221 is 1221020223132.

It is not a de Polignac number, because 2313220201221 - 2¹⁰ = 2313220200197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313220201241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29501626 + ... + 29579931.

It is an arithmetic number, because the mean of its divisors is an integer number (199459339808).

Almost surely, 2^{2313220201221} is an apocalyptic number.

It is an amenable number.

2313220201221 is a deficient number, since it is larger than the sum of its proper divisors (878129235707).

2313220201221 is a wasteful number, since it uses less digits than its factorization.

2313220201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59082012.

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

Adding to 2313220201221 its reverse (1221020223132), we get a palindrome (3534240424353).

The spelling of 2313220201221 in words is "two trillion, three hundred thirteen billion, two hundred twenty million, two hundred one thousand, two hundred twenty-one".