110123220123391 has 2 divisors, whose sum is σ = 110123220123392. Its totient is φ = 110123220123390.

The previous prime is 110123220123227. The next prime is 110123220123401. The reversal of 110123220123391 is 193321022321011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 110123220123391 - 2⁴³ = 101327127101183 is a prime.

It is a super-2 number, since 2×110123220123391² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110123220123691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55061610061695 + 55061610061696.

It is an arithmetic number, because the mean of its divisors is an integer number (55061610061696).

Almost surely, 2^{110123220123391} is an apocalyptic number.

110123220123391 is a deficient number, since it is larger than the sum of its proper divisors (1).

110123220123391 is an equidigital number, since it uses as much as digits as its factorization.

110123220123391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 110123220123391 in words is "one hundred ten trillion, one hundred twenty-three billion, two hundred twenty million, one hundred twenty-three thousand, three hundred ninety-one".