13321011201021 has 16 divisors (see below), whose sum is σ = 19834001424000. Its totient is φ = 8836047627264.

The previous prime is 13321011200999. The next prime is 13321011201049. The reversal of 13321011201021 is 12010211012331.

It is not a de Polignac number, because 13321011201021 - 2⁹ = 13321011200509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13321011200985 and 13321011201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321011201521) 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, 1239619716 + ... + 1239630461.

It is an arithmetic number, because the mean of its divisors is an integer number (1239625089000).

Almost surely, 2^{13321011201021} is an apocalyptic number.

It is an amenable number.

13321011201021 is a deficient number, since it is larger than the sum of its proper divisors (6512990222979).

13321011201021 is a wasteful number, since it uses less digits than its factorization.

13321011201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479250385 (or 2479250379 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 13321011201021 its reverse (12010211012331), we get a palindrome (25331222213352).

The spelling of 13321011201021 in words is "thirteen trillion, three hundred twenty-one billion, eleven million, two hundred one thousand, twenty-one".