13216991201 has 2 divisors, whose sum is σ = 13216991202. Its totient is φ = 13216991200.

The previous prime is 13216991111. The next prime is 13216991233. The reversal of 13216991201 is 10219961231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13111395025 + 105596176 = 114505^2 + 10276^2 .

It is a cyclic number.

It is not a de Polignac number, because 13216991201 - 2²⁶ = 13149882337 is a prime.

It is a super-2 number, since 2×13216991201² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13216931201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6608495600 + 6608495601.

It is an arithmetic number, because the mean of its divisors is an integer number (6608495601).

Almost surely, 2^13216991201 is an apocalyptic number.

It is an amenable number.

13216991201 is a deficient number, since it is larger than the sum of its proper divisors (1).

13216991201 is an equidigital number, since it uses as much as digits as its factorization.

13216991201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 13216991201 in words is "thirteen billion, two hundred sixteen million, nine hundred ninety-one thousand, two hundred one".