12220210091 has 2 divisors, whose sum is σ = 12220210092. Its totient is φ = 12220210090.

The previous prime is 12220210073. The next prime is 12220210133. The reversal of 12220210091 is 19001202221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12220210091 - 2⁶ = 12220210027 is a prime.

It is a super-3 number, since 3×12220210091³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12220210061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110105045 + 6110105046.

It is an arithmetic number, because the mean of its divisors is an integer number (6110105046).

Almost surely, 2^12220210091 is an apocalyptic number.

12220210091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220210091 is an equidigital number, since it uses as much as digits as its factorization.

12220210091 is an evil number, because the sum of its binary digits is even.

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

The spelling of 12220210091 in words is "twelve billion, two hundred twenty million, two hundred ten thousand, ninety-one".