110121491 has 4 divisors (see below), whose sum is σ = 110439192. Its totient is φ = 109803792.

The previous prime is 110121469. The next prime is 110121503. The reversal of 110121491 is 194121011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110121491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110121421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158330 + ... + 159023.

It is an arithmetic number, because the mean of its divisors is an integer number (27609798).

Almost surely, 2^110121491 is an apocalyptic number.

110121491 is a deficient number, since it is larger than the sum of its proper divisors (317701).

110121491 is an equidigital number, since it uses as much as digits as its factorization.

110121491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317700.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 110121491 is about 10493.8787395319. The cubic root of 110121491 is about 479.3183191042.

The spelling of 110121491 in words is "one hundred ten million, one hundred twenty-one thousand, four hundred ninety-one".