122455381 has 4 divisors (see below), whose sum is σ = 127779552. Its totient is φ = 117131212.

The previous prime is 122455349. The next prime is 122455391. The reversal of 122455381 is 183554221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 183554221 = 5087 ⋅36083.

It is a cyclic number.

It is not a de Polignac number, because 122455381 - 2⁵ = 122455349 is a prime.

It is a super-2 number, since 2×122455381² = 29990640671710322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122455331) 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, 2662051 + ... + 2662096.

It is an arithmetic number, because the mean of its divisors is an integer number (31944888).

Almost surely, 2^122455381 is an apocalyptic number.

It is an amenable number.

122455381 is a deficient number, since it is larger than the sum of its proper divisors (5324171).

122455381 is an equidigital number, since it uses as much as digits as its factorization.

122455381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324170.

The product of its digits is 9600, while the sum is 31.

The square root of 122455381 is about 11065.9559460536. The cubic root of 122455381 is about 496.5838881806.

The spelling of 122455381 in words is "one hundred twenty-two million, four hundred fifty-five thousand, three hundred eighty-one".