12211010101091 has 2 divisors, whose sum is σ = 12211010101092. Its totient is φ = 12211010101090.

The previous prime is 12211010101061. The next prime is 12211010101139. The reversal of 12211010101091 is 19010101011221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211010101091 is a prime.

It is not a weakly prime, because it can be changed into another prime (12211010101001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105505050545 + 6105505050546.

It is an arithmetic number, because the mean of its divisors is an integer number (6105505050546).

Almost surely, 2^{12211010101091} is an apocalyptic number.

12211010101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211010101091 is an equidigital number, since it uses as much as digits as its factorization.

12211010101091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 12211010101091 in words is "twelve trillion, two hundred eleven billion, ten million, one hundred one thousand, ninety-one".