122281427 has 4 divisors (see below), whose sum is σ = 122768856. Its totient is φ = 121794000.

The previous prime is 122281403. The next prime is 122281457. The reversal of 122281427 is 724182221.

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 122281427 - 2¹⁴ = 122265043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122281427.

It is not an unprimeable number, because it can be changed into a prime (122281457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243338 + ... + 243839.

It is an arithmetic number, because the mean of its divisors is an integer number (30692214).

Almost surely, 2^122281427 is an apocalyptic number.

122281427 is a deficient number, since it is larger than the sum of its proper divisors (487429).

122281427 is an equidigital number, since it uses as much as digits as its factorization.

122281427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487428.

The product of its digits is 3584, while the sum is 29.

The square root of 122281427 is about 11058.0932804892. The cubic root of 122281427 is about 496.3486359906.

The spelling of 122281427 in words is "one hundred twenty-two million, two hundred eighty-one thousand, four hundred twenty-seven".