2313200123221 has 16 divisors (see below), whose sum is σ = 2497054014000. Its totient is φ = 2130193041408.

The previous prime is 2313200123207. The next prime is 2313200123231. The reversal of 2313200123221 is 1223210023132.

It can be written as a sum of positive squares in 8 ways, for example, as 294101220721 + 2019098902500 = 542311^2 + 1420950^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313200123221 - 2⁷ = 2313200123093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2313200123192 and 2313200123201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313200123231) 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, 34715625 + ... + 34782193.

It is an arithmetic number, because the mean of its divisors is an integer number (156065875875).

Almost surely, 2^{2313200123221} is an apocalyptic number.

It is an amenable number.

2313200123221 is a deficient number, since it is larger than the sum of its proper divisors (183853890779).

2313200123221 is a wasteful number, since it uses less digits than its factorization.

2313200123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72888.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2313200123221 its reverse (1223210023132), we get a palindrome (3536410146353).

The spelling of 2313200123221 in words is "two trillion, three hundred thirteen billion, two hundred million, one hundred twenty-three thousand, two hundred twenty-one".