122005218 has 16 divisors (see below), whose sum is σ = 244321056. Its totient is φ = 40616640.

The previous prime is 122005211. The next prime is 122005229. The reversal of 122005218 is 812500221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122005194 and 122005203.

It is not an unprimeable number, because it can be changed into a prime (122005211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7671 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (15270066).

Almost surely, 2^122005218 is an apocalyptic number.

122005218 is an abundant number, since it is smaller than the sum of its proper divisors (122315838).

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

122005218 is a wasteful number, since it uses less digits than its factorization.

122005218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25889.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 122005218 is about 11045.5972224231. The cubic root of 122005218 is about 495.9746372090.

Adding to 122005218 its reverse (812500221), we get a palindrome (934505439).

The spelling of 122005218 in words is "one hundred twenty-two million, five thousand, two hundred eighteen".