13202306021 has 4 divisors (see below), whose sum is σ = 13204001472. Its totient is φ = 13200610572.

The previous prime is 13202306017. The next prime is 13202306023. The reversal of 13202306021 is 12060320231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13202306021 - 2² = 13202306017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13202305984 and 13202306002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13202306023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835991 + ... + 851636.

It is an arithmetic number, because the mean of its divisors is an integer number (3301000368).

Almost surely, 2^13202306021 is an apocalyptic number.

It is an amenable number.

13202306021 is a deficient number, since it is larger than the sum of its proper divisors (1695451).

13202306021 is an equidigital number, since it uses as much as digits as its factorization.

13202306021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695450.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13202306021 its reverse (12060320231), we get a palindrome (25262626252).

The spelling of 13202306021 in words is "thirteen billion, two hundred two million, three hundred six thousand, twenty-one".