12210202091 has 2 divisors, whose sum is σ = 12210202092. Its totient is φ = 12210202090.

The previous prime is 12210202061. The next prime is 12210202129. The reversal of 12210202091 is 19020201221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210202091 is a prime.

It is not a weakly prime, because it can be changed into another prime (12210202061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105101045 + 6105101046.

It is an arithmetic number, because the mean of its divisors is an integer number (6105101046).

Almost surely, 2^12210202091 is an apocalyptic number.

12210202091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210202091 is an equidigital number, since it uses as much as digits as its factorization.

12210202091 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 12210202091 in words is "twelve billion, two hundred ten million, two hundred two thousand, ninety-one".