1321001023013 has 16 divisors (see below), whose sum is σ = 1511700864000. Its totient is φ = 1130798126592.

The previous prime is 1321001022967. The next prime is 1321001023021. The reversal of 1321001023013 is 3103201001231.

It is a cyclic number.

It is not a de Polignac number, because 1321001023013 - 2¹⁸ = 1321000760869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321001022982 and 1321001023000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321001023313) 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, 30145523 + ... + 30189311.

It is an arithmetic number, because the mean of its divisors is an integer number (94481304000).

Almost surely, 2^{1321001023013} is an apocalyptic number.

It is an amenable number.

1321001023013 is a deficient number, since it is larger than the sum of its proper divisors (190699840987).

1321001023013 is an equidigital number, since it uses as much as digits as its factorization.

1321001023013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49364.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1321001023013 its reverse (3103201001231), we get a palindrome (4424202024244).

The spelling of 1321001023013 in words is "one trillion, three hundred twenty-one billion, one million, twenty-three thousand, thirteen".