13200122021 has 4 divisors (see below), whose sum is σ = 13204238700. Its totient is φ = 13196005344.

The previous prime is 13200122011. The next prime is 13200122029. The reversal of 13200122021 is 12022100231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8805757921 + 4394364100 = 93839^2 + 66290^2 .

It is a cyclic number.

It is not a de Polignac number, because 13200122021 - 2³⁰ = 12126380197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13200121987 and 13200122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13200122029) 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, 2053526 + ... + 2059943.

It is an arithmetic number, because the mean of its divisors is an integer number (3301059675).

Almost surely, 2^13200122021 is an apocalyptic number.

It is an amenable number.

13200122021 is a deficient number, since it is larger than the sum of its proper divisors (4116679).

13200122021 is an equidigital number, since it uses as much as digits as its factorization.

13200122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116678.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 13200122021 its reverse (12022100231), we get a palindrome (25222222252).

The spelling of 13200122021 in words is "thirteen billion, two hundred million, one hundred twenty-two thousand, twenty-one".