110918491921 has 4 divisors (see below), whose sum is σ = 115741035072. Its totient is φ = 106095948772.

The previous prime is 110918491889. The next prime is 110918491927. The reversal of 110918491921 is 129194819011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 110918491921 - 2⁵ = 110918491889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110918491927) 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 in 3 ways as a sum of consecutive naturals, for example, 2411271541 + ... + 2411271586.

It is an arithmetic number, because the mean of its divisors is an integer number (28935258768).

Almost surely, 2^110918491921 is an apocalyptic number.

It is an amenable number.

110918491921 is a deficient number, since it is larger than the sum of its proper divisors (4822543151).

110918491921 is an equidigital number, since it uses as much as digits as its factorization.

110918491921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822543150.

The product of its (nonzero) digits is 46656, while the sum is 46.

The spelling of 110918491921 in words is "one hundred ten billion, nine hundred eighteen million, four hundred ninety-one thousand, nine hundred twenty-one".