13202020032121 has 4 divisors (see below), whose sum is σ = 13254617721744. Its totient is φ = 13149422342500.

The previous prime is 13202020032053. The next prime is 13202020032127. The reversal of 13202020032121 is 12123002020231.

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 13202020032121 - 2⁹ = 13202020031609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13202020032127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26298844435 + ... + 26298844936.

It is an arithmetic number, because the mean of its divisors is an integer number (3313654430436).

Almost surely, 2^{13202020032121} is an apocalyptic number.

It is an amenable number.

13202020032121 is a deficient number, since it is larger than the sum of its proper divisors (52597689623).

13202020032121 is an equidigital number, since it uses as much as digits as its factorization.

13202020032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52597689622.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13202020032121 its reverse (12123002020231), we get a palindrome (25325022052352).

The spelling of 13202020032121 in words is "thirteen trillion, two hundred two billion, twenty million, thirty-two thousand, one hundred twenty-one".