102111122231 has 2 divisors, whose sum is σ = 102111122232. Its totient is φ = 102111122230.

The previous prime is 102111122209. The next prime is 102111122237. The reversal of 102111122231 is 132221111201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102111122231 - 2¹⁸ = 102110860087 is a prime.

It is a super-2 number, since 2×102111122231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102111122237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055561115 + 51055561116.

It is an arithmetic number, because the mean of its divisors is an integer number (51055561116).

Almost surely, 2^102111122231 is an apocalyptic number.

102111122231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111122231 is an equidigital number, since it uses as much as digits as its factorization.

102111122231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 102111122231 its reverse (132221111201), we get a palindrome (234332233432).

The spelling of 102111122231 in words is "one hundred two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred thirty-one".