122180418 has 12 divisors (see below), whose sum is σ = 264724278. Its totient is φ = 40726800.

The previous prime is 122180417. The next prime is 122180419. The reversal of 122180418 is 814081221.

It is an interprime number because it is at equal distance from previous prime (122180417) and next prime (122180419).

It can be written as a sum of positive squares in only one way, i.e., 102758769 + 19421649 = 10137^2 + 4407^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122180391 and 122180400.

It is not an unprimeable number, because it can be changed into a prime (122180417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3393883 + ... + 3393918.

Almost surely, 2^122180418 is an apocalyptic number.

122180418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122180418 is an abundant number, since it is smaller than the sum of its proper divisors (142543860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122180418 is a wasteful number, since it uses less digits than its factorization.

122180418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6787809 (or 6787806 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 122180418 is about 11053.5251390676. The cubic root of 122180418 is about 496.2119308736.

The spelling of 122180418 in words is "one hundred twenty-two million, one hundred eighty thousand, four hundred eighteen".