122218680 has 32 divisors (see below), whose sum is σ = 366656400. Its totient is φ = 32591616.

The previous prime is 122218651. The next prime is 122218687. The reversal of 122218680 is 86812221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122218687) 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 7 ways as a sum of consecutive naturals, for example, 509125 + ... + 509364.

Almost surely, 2^122218680 is an apocalyptic number.

122218680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122218680 is an abundant number, since it is smaller than the sum of its proper divisors (244437720).

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

122218680 is a wasteful number, since it uses less digits than its factorization.

122218680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018503 (or 1018499 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 122218680 is about 11055.2557636628. The cubic root of 122218680 is about 496.2637233503.

It can be divided in two parts, 1222186 and 80, that added together give a triangular number (1222266 = T₁₅₆₃).

The spelling of 122218680 in words is "one hundred twenty-two million, two hundred eighteen thousand, six hundred eighty".