122219818 has 32 divisors (see below), whose sum is σ = 225072000. Its totient is φ = 49617792.

The previous prime is 122219813. The next prime is 122219821. The reversal of 122219818 is 818912221.

It is not an unprimeable number, because it can be changed into a prime (122219813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8346 + ... + 17722.

It is an arithmetic number, because the mean of its divisors is an integer number (7033500).

Almost surely, 2^122219818 is an apocalyptic number.

122219818 is a deficient number, since it is larger than the sum of its proper divisors (102852182).

122219818 is an equidigital number, since it uses as much as digits as its factorization.

122219818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9419 (or 9405 counting only the distinct ones).

The product of its digits is 4608, while the sum is 34.

The square root of 122219818 is about 11055.3072322754. The cubic root of 122219818 is about 496.2652636123.

The spelling of 122219818 in words is "one hundred twenty-two million, two hundred nineteen thousand, eight hundred eighteen".