1312420121344 has 18 divisors (see below), whose sum is σ = 2619713602100. Its totient is φ = 656210060544.

The previous prime is 1312420121329. The next prime is 1312420121359. The reversal of 1312420121344 is 4431210242131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1312420121329) and next prime (1312420121359).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2563320294 + ... + 2563320805.

Almost surely, 2^{1312420121344} is an apocalyptic number.

It is an amenable number.

1312420121344 is a deficient number, since it is larger than the sum of its proper divisors (1307293480756).

1312420121344 is an frugal number, since it uses more digits than its factorization.

1312420121344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126641115 (or 5126641101 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1312420121344 its reverse (4431210242131), we get a palindrome (5743630363475).

The spelling of 1312420121344 in words is "one trillion, three hundred twelve billion, four hundred twenty million, one hundred twenty-one thousand, three hundred forty-four".