2331221253613 has 8 divisors (see below), whose sum is σ = 2667340067328. Its totient is φ = 1995874241424.

The previous prime is 2331221253553. The next prime is 2331221253661. The reversal of 2331221253613 is 3163521221332.

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

It is not a de Polignac number, because 2331221253613 - 2¹³ = 2331221245421 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 (2331221253013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192943906 + ... + 192955987.

It is an arithmetic number, because the mean of its divisors is an integer number (333417508416).

Almost surely, 2^{2331221253613} is an apocalyptic number.

It is an amenable number.

2331221253613 is a deficient number, since it is larger than the sum of its proper divisors (336118813715).

2331221253613 is an equidigital number, since it uses as much as digits as its factorization.

2331221253613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385900763.

The product of its digits is 38880, while the sum is 34.

Adding to 2331221253613 its reverse (3163521221332), we get a palindrome (5494742474945).

The spelling of 2331221253613 in words is "two trillion, three hundred thirty-one billion, two hundred twenty-one million, two hundred fifty-three thousand, six hundred thirteen".