12122200091 has 8 divisors (see below), whose sum is σ = 12266461104. Its totient is φ = 11978588160.

The previous prime is 12122200087. The next prime is 12122200141. The reversal of 12122200091 is 19000222121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12122200091 - 2² = 12122200087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122202091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124646 + ... + 199451.

It is an arithmetic number, because the mean of its divisors is an integer number (1533307638).

Almost surely, 2^12122200091 is an apocalyptic number.

12122200091 is a deficient number, since it is larger than the sum of its proper divisors (144261013).

12122200091 is a wasteful number, since it uses less digits than its factorization.

12122200091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324541.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12122200091 in words is "twelve billion, one hundred twenty-two million, two hundred thousand, ninety-one".