2313111201221 has 8 divisors (see below), whose sum is σ = 2413710273600. Its totient is φ = 2212514547232.

The previous prime is 2313111201197. The next prime is 2313111201241. The reversal of 2313111201221 is 1221021113132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2313111201221 - 2¹⁸ = 2313110939077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2313111201193 and 2313111201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313111201241) 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 7 ways as a sum of consecutive naturals, for example, 1506866 + ... + 2626188.

It is an arithmetic number, because the mean of its divisors is an integer number (301713784200).

Almost surely, 2^{2313111201221} is an apocalyptic number.

It is an amenable number.

2313111201221 is a deficient number, since it is larger than the sum of its proper divisors (100599072379).

2313111201221 is a wasteful number, since it uses less digits than its factorization.

2313111201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209195.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2313111201221 its reverse (1221021113132), we get a palindrome (3534132314353).

The spelling of 2313111201221 in words is "two trillion, three hundred thirteen billion, one hundred eleven million, two hundred one thousand, two hundred twenty-one".