102222109391 has 2 divisors, whose sum is σ = 102222109392. Its totient is φ = 102222109390.

The previous prime is 102222109387. The next prime is 102222109427. The reversal of 102222109391 is 193901222201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102222109391 - 2² = 102222109387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102222109331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111054695 + 51111054696.

It is an arithmetic number, because the mean of its divisors is an integer number (51111054696).

Almost surely, 2^102222109391 is an apocalyptic number.

102222109391 is a deficient number, since it is larger than the sum of its proper divisors (1).

102222109391 is an equidigital number, since it uses as much as digits as its factorization.

102222109391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 102222109391 in words is "one hundred two billion, two hundred twenty-two million, one hundred nine thousand, three hundred ninety-one".