191222222047 has 2 divisors, whose sum is σ = 191222222048. Its totient is φ = 191222222046.

The previous prime is 191222222003. The next prime is 191222222129. The reversal of 191222222047 is 740222222191.

It is a weak prime.

It is an emirp because it is prime and its reverse (740222222191) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191222222047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191222220047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95611111023 + 95611111024.

It is an arithmetic number, because the mean of its divisors is an integer number (95611111024).

Almost surely, 2^191222222047 is an apocalyptic number.

191222222047 is a deficient number, since it is larger than the sum of its proper divisors (1).

191222222047 is an equidigital number, since it uses as much as digits as its factorization.

191222222047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 191222222047 in words is "one hundred ninety-one billion, two hundred twenty-two million, two hundred twenty-two thousand, forty-seven".