110191121 has 2 divisors, whose sum is σ = 110191122. Its totient is φ = 110191120.

The previous prime is 110191117. The next prime is 110191129. The reversal of 110191121 is 121191011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103632400 + 6558721 = 10180^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 110191121 - 2² = 110191117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 110191121.

It is not a weakly prime, because it can be changed into another prime (110191129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55095560 + 55095561.

It is an arithmetic number, because the mean of its divisors is an integer number (55095561).

Almost surely, 2^110191121 is an apocalyptic number.

It is an amenable number.

110191121 is a deficient number, since it is larger than the sum of its proper divisors (1).

110191121 is an equidigital number, since it uses as much as digits as its factorization.

110191121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 17.

The square root of 110191121 is about 10497.1958636581. The cubic root of 110191121 is about 479.4193224064.

The spelling of 110191121 in words is "one hundred ten million, one hundred ninety-one thousand, one hundred twenty-one".