2131222099 has 2 divisors, whose sum is σ = 2131222100. Its totient is φ = 2131222098.

The previous prime is 2131222073. The next prime is 2131222111. The reversal of 2131222099 is 9902221312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131222099 - 2²¹ = 2129124947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2131222099.

It is not a weakly prime, because it can be changed into another prime (2131222019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065611049 + 1065611050.

It is an arithmetic number, because the mean of its divisors is an integer number (1065611050).

Almost surely, 2^2131222099 is an apocalyptic number.

2131222099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131222099 is an equidigital number, since it uses as much as digits as its factorization.

2131222099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2131222099 is about 46165.1610957874. The cubic root of 2131222099 is about 1286.8943779894.

The spelling of 2131222099 in words is "two billion, one hundred thirty-one million, two hundred twenty-two thousand, ninety-nine".