12221123010091 has 2 divisors, whose sum is σ = 12221123010092. Its totient is φ = 12221123010090.

The previous prime is 12221123010049. The next prime is 12221123010101. The reversal of 12221123010091 is 19001032112221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221123010091 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221123050091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110561505045 + 6110561505046.

It is an arithmetic number, because the mean of its divisors is an integer number (6110561505046).

Almost surely, 2^{12221123010091} is an apocalyptic number.

12221123010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221123010091 is an equidigital number, since it uses as much as digits as its factorization.

12221123010091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 12221123010091 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-three million, ten thousand, ninety-one".