1312400230221 has 8 divisors (see below), whose sum is σ = 1750071934240. Its totient is φ = 874831006512.

The previous prime is 1312400230201. The next prime is 1312400230279. The reversal of 1312400230221 is 1220320042131.

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

It is not a de Polignac number, because 1312400230221 - 2⁶ = 1312400230157 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 (1312400230201) 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, 25590190 + ... + 25641423.

It is an arithmetic number, because the mean of its divisors is an integer number (218758991780).

Almost surely, 2^{1312400230221} is an apocalyptic number.

It is an amenable number.

1312400230221 is a deficient number, since it is larger than the sum of its proper divisors (437671704019).

1312400230221 is an equidigital number, since it uses as much as digits as its factorization.

1312400230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51240155.

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

Adding to 1312400230221 its reverse (1220320042131), we get a palindrome (2532720272352).

The spelling of 1312400230221 in words is "one trillion, three hundred twelve billion, four hundred million, two hundred thirty thousand, two hundred twenty-one".