12211010319491 has 2 divisors, whose sum is σ = 12211010319492. Its totient is φ = 12211010319490.

The previous prime is 12211010319481. The next prime is 12211010319499. The reversal of 12211010319491 is 19491301011221.

12211010319491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12211010319491 - 2²² = 12211006125187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12211010319499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105505159745 + 6105505159746.

It is an arithmetic number, because the mean of its divisors is an integer number (6105505159746).

Almost surely, 2^{12211010319491} is an apocalyptic number.

12211010319491 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211010319491 is an equidigital number, since it uses as much as digits as its factorization.

12211010319491 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 35.

The spelling of 12211010319491 in words is "twelve trillion, two hundred eleven billion, ten million, three hundred nineteen thousand, four hundred ninety-one".