13321532021 has 8 divisors (see below), whose sum is σ = 15230073600. Its totient is φ = 11414356848.

The previous prime is 13321531991. The next prime is 13321532039. The reversal of 13321532021 is 12023512331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321532021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321532821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320621 + ... + 359778.

It is an arithmetic number, because the mean of its divisors is an integer number (1903759200).

Almost surely, 2^13321532021 is an apocalyptic number.

It is an amenable number.

13321532021 is a deficient number, since it is larger than the sum of its proper divisors (1908541579).

13321532021 is an equidigital number, since it uses as much as digits as its factorization.

13321532021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683203.

The product of its (nonzero) digits is 1080, while the sum is 23.

The spelling of 13321532021 in words is "thirteen billion, three hundred twenty-one million, five hundred thirty-two thousand, twenty-one".