13200200021 has 4 divisors (see below), whose sum is σ = 13239370092. Its totient is φ = 13161029952.

The previous prime is 13200199979. The next prime is 13200200023. The reversal of 13200200021 is 12000200231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12000200231 = 107773 ⋅111347.

It can be written as a sum of positive squares in 2 ways, for example, as 7349632900 + 5850567121 = 85730^2 + 76489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13200200021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13200199975 and 13200200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13200200023) 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, 19584530 + ... + 19585203.

It is an arithmetic number, because the mean of its divisors is an integer number (3309842523).

Almost surely, 2^13200200021 is an apocalyptic number.

It is an amenable number.

13200200021 is a deficient number, since it is larger than the sum of its proper divisors (39170071).

13200200021 is an equidigital number, since it uses as much as digits as its factorization.

13200200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39170070.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 13200200021 its reverse (12000200231), we get a palindrome (25200400252).

The spelling of 13200200021 in words is "thirteen billion, two hundred million, two hundred thousand, twenty-one".