122278005 has 40 divisors (see below), whose sum is σ = 228742272. Its totient is φ = 62374752.

The previous prime is 122278001. The next prime is 122278019. The reversal of 122278005 is 500872221.

It is not a de Polignac number, because 122278005 - 2² = 122278001 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 122278005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122278001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2752 + ... + 15878.

Almost surely, 2^122278005 is an apocalyptic number.

122278005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122278005 is a deficient number, since it is larger than the sum of its proper divisors (106464267).

122278005 is a wasteful number, since it uses less digits than its factorization.

122278005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13167 (or 13158 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 122278005 is about 11057.9385511044. The cubic root of 122278005 is about 496.3440059038.

The spelling of 122278005 in words is "one hundred twenty-two million, two hundred seventy-eight thousand, five".