1321123422013 has 16 divisors (see below), whose sum is σ = 1372269600000. Its totient is φ = 1270942524352.

The previous prime is 1321123421999. The next prime is 1321123422043. The reversal of 1321123422013 is 3102243211231.

It is a cyclic number.

It is not a de Polignac number, because 1321123422013 - 2³⁷ = 1183684468541 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 (1321123422043) 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, 27009543 + ... + 27058411.

It is an arithmetic number, because the mean of its divisors is an integer number (85766850000).

Almost surely, 2^{1321123422013} is an apocalyptic number.

It is an amenable number.

1321123422013 is a deficient number, since it is larger than the sum of its proper divisors (51146177987).

1321123422013 is an equidigital number, since it uses as much as digits as its factorization.

1321123422013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58724.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1321123422013 its reverse (3102243211231), we get a palindrome (4423366633244).

The spelling of 1321123422013 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-three million, four hundred twenty-two thousand, thirteen".