110213311991 has 2 divisors, whose sum is σ = 110213311992. Its totient is φ = 110213311990.

The previous prime is 110213311979. The next prime is 110213312021. The reversal of 110213311991 is 199113312011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110213311991 - 2¹⁰ = 110213310967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110213319991) 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, 55106655995 + 55106655996.

It is an arithmetic number, because the mean of its divisors is an integer number (55106655996).

Almost surely, 2^110213311991 is an apocalyptic number.

110213311991 is a deficient number, since it is larger than the sum of its proper divisors (1).

110213311991 is an equidigital number, since it uses as much as digits as its factorization.

110213311991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 110213311991 in words is "one hundred ten billion, two hundred thirteen million, three hundred eleven thousand, nine hundred ninety-one".