122230891 has 4 divisors (see below), whose sum is σ = 122404000. Its totient is φ = 122057784.

The previous prime is 122230883. The next prime is 122230919. The reversal of 122230891 is 198032221.

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

It is a cyclic number.

It is not a de Polignac number, because 122230891 - 2³ = 122230883 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (122231891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85491 + ... + 86908.

It is an arithmetic number, because the mean of its divisors is an integer number (30601000).

Almost surely, 2^122230891 is an apocalyptic number.

122230891 is a deficient number, since it is larger than the sum of its proper divisors (173109).

122230891 is an equidigital number, since it uses as much as digits as its factorization.

122230891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173108.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 122230891 is about 11055.8080211263. The cubic root of 122230891 is about 496.2802502143.

The spelling of 122230891 in words is "one hundred twenty-two million, two hundred thirty thousand, eight hundred ninety-one".