102222312201991 has 2 divisors, whose sum is σ = 102222312201992. Its totient is φ = 102222312201990.

The previous prime is 102222312201953. The next prime is 102222312202147. The reversal of 102222312201991 is 199102213222201.

It is a weak prime.

It is an emirp because it is prime and its reverse (199102213222201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102222312201991 - 2¹⁷ = 102222312070919 is a prime.

It is a super-2 number, since 2×102222312201991² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102222312201991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102222312202991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111156100995 + 51111156100996.

It is an arithmetic number, because the mean of its divisors is an integer number (51111156100996).

Almost surely, 2^{102222312201991} is an apocalyptic number.

102222312201991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102222312201991 is an equidigital number, since it uses as much as digits as its factorization.

102222312201991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 102222312201991 in words is "one hundred two trillion, two hundred twenty-two billion, three hundred twelve million, two hundred one thousand, nine hundred ninety-one".