2231244012521 has 8 divisors (see below), whose sum is σ = 2255358836640. Its totient is φ = 2207151888768.

The previous prime is 2231244012433. The next prime is 2231244012533. The reversal of 2231244012521 is 1252104421322.

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 2231244012521 - 2³⁴ = 2214064143337 is a prime.

It is a super-3 number, since 3×2231244012521³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2231244072521) 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, 5477411 + ... + 5870648.

It is an arithmetic number, because the mean of its divisors is an integer number (281919854580).

Almost surely, 2^{2231244012521} is an apocalyptic number.

It is an amenable number.

2231244012521 is a deficient number, since it is larger than the sum of its proper divisors (24114824119).

2231244012521 is a wasteful number, since it uses less digits than its factorization.

2231244012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11350183.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 2231244012521 its reverse (1252104421322), we get a palindrome (3483348433843).

The spelling of 2231244012521 in words is "two trillion, two hundred thirty-one billion, two hundred forty-four million, twelve thousand, five hundred twenty-one".