13011321223021 has 12 divisors (see below), whose sum is σ = 14980549143744. Its totient is φ = 11205922581000.

The previous prime is 13011321222973. The next prime is 13011321223027. The reversal of 13011321223021 is 12032212311031.

It is not a de Polignac number, because 13011321223021 - 2¹¹ = 13011321220973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13011321222983 and 13011321223001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011321223027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1638288805 + ... + 1638296746.

It is an arithmetic number, because the mean of its divisors is an integer number (1248379095312).

Almost surely, 2^{13011321223021} is an apocalyptic number.

13011321223021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13011321223021 is a deficient number, since it is larger than the sum of its proper divisors (1969227920723).

13011321223021 is a wasteful number, since it uses less digits than its factorization.

13011321223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276585600 (or 3276585581 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13011321223021 its reverse (12032212311031), we get a palindrome (25043533534052).

The spelling of 13011321223021 in words is "thirteen trillion, eleven billion, three hundred twenty-one million, two hundred twenty-three thousand, twenty-one".