102312021211091 has 2 divisors, whose sum is σ = 102312021211092. Its totient is φ = 102312021211090.

The previous prime is 102312021211009. The next prime is 102312021211139. The reversal of 102312021211091 is 190112120213201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102312021211091 - 2²⁶ = 102311954102227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102312021211091.

It is not a weakly prime, because it can be changed into another prime (102312021211391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51156010605545 + 51156010605546.

It is an arithmetic number, because the mean of its divisors is an integer number (51156010605546).

Almost surely, 2^{102312021211091} is an apocalyptic number.

102312021211091 is a deficient number, since it is larger than the sum of its proper divisors (1).

102312021211091 is an equidigital number, since it uses as much as digits as its factorization.

102312021211091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 102312021211091 its reverse (190112120213201), we get a palindrome (292424141424292).

The spelling of 102312021211091 in words is "one hundred two trillion, three hundred twelve billion, twenty-one million, two hundred eleven thousand, ninety-one".