13953221099 has 4 divisors (see below), whose sum is σ = 13956143136. Its totient is φ = 13950299064.

The previous prime is 13953221089. The next prime is 13953221203. The reversal of 13953221099 is 99012235931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99012235931 = 7 ⋅14144605133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13953221099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13953221089) 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, 1453844 + ... + 1463409.

It is an arithmetic number, because the mean of its divisors is an integer number (3489035784).

Almost surely, 2^13953221099 is an apocalyptic number.

13953221099 is a deficient number, since it is larger than the sum of its proper divisors (2922037).

13953221099 is an equidigital number, since it uses as much as digits as its factorization.

13953221099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922036.

The product of its (nonzero) digits is 131220, while the sum is 44.

The spelling of 13953221099 in words is "thirteen billion, nine hundred fifty-three million, two hundred twenty-one thousand, ninety-nine".