102221221111091 has 2 divisors, whose sum is σ = 102221221111092. Its totient is φ = 102221221111090.

The previous prime is 102221221111001. The next prime is 102221221111103. The reversal of 102221221111091 is 190111122122201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102221221111091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102221221111091.

It is not a weakly prime, because it can be changed into another prime (102221221111001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110610555545 + 51110610555546.

It is an arithmetic number, because the mean of its divisors is an integer number (51110610555546).

Almost surely, 2^{102221221111091} is an apocalyptic number.

102221221111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221221111091 is an equidigital number, since it uses as much as digits as its factorization.

102221221111091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 26.

Adding to 102221221111091 its reverse (190111122122201), we get a palindrome (292332343233292).

The spelling of 102221221111091 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred eleven thousand, ninety-one".