1321123112413 has 16 divisors (see below), whose sum is σ = 1433787505920. Its totient is φ = 1210065240384.

The previous prime is 1321123112411. The next prime is 1321123112431. The reversal of 1321123112413 is 3142113211231.

It is not a de Polignac number, because 1321123112413 - 2¹ = 1321123112411 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 (1321123112411) 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, 464295 + ... + 1690507.

It is an arithmetic number, because the mean of its divisors is an integer number (89611719120).

Almost surely, 2^{1321123112413} is an apocalyptic number.

1321123112413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321123112413 is a deficient number, since it is larger than the sum of its proper divisors (112664393507).

1321123112413 is a wasteful number, since it uses less digits than its factorization.

1321123112413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226868.

The product of its digits is 864, while the sum is 25.

Adding to 1321123112413 its reverse (3142113211231), we get a palindrome (4463236323644).

The spelling of 1321123112413 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-three million, one hundred twelve thousand, four hundred thirteen".