2110123091 has 2 divisors, whose sum is σ = 2110123092. Its totient is φ = 2110123090.

The previous prime is 2110123087. The next prime is 2110123111. The reversal of 2110123091 is 1903210112.

It is an a-pointer prime, because the next prime (2110123111) can be obtained adding 2110123091 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2110123091 - 2² = 2110123087 is a prime.

It is not a weakly prime, because it can be changed into another prime (2110123031) 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, 1055061545 + 1055061546.

It is an arithmetic number, because the mean of its divisors is an integer number (1055061546).

Almost surely, 2^2110123091 is an apocalyptic number.

2110123091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110123091 is an equidigital number, since it uses as much as digits as its factorization.

2110123091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 2110123091 is about 45936.0761384775. The cubic root of 2110123091 is about 1282.6335530648.

The spelling of 2110123091 in words is "two billion, one hundred ten million, one hundred twenty-three thousand, ninety-one".