122242220 has 24 divisors (see below), whose sum is σ = 257073264. Its totient is φ = 48827456.

The previous prime is 122242193. The next prime is 122242259. The reversal of 122242220 is 22242221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11507 + ... + 19413.

It is an arithmetic number, because the mean of its divisors is an integer number (10711386).

Almost surely, 2^122242220 is an apocalyptic number.

122242220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122242220 is an abundant number, since it is smaller than the sum of its proper divisors (134831044).

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

122242220 is a wasteful number, since it uses less digits than its factorization.

122242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8689 (or 8687 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 122242220 is about 11056.3203643889. The cubic root of 122242220 is about 496.2955823594.

Adding to 122242220 its reverse (22242221), we get a palindrome (144484441).

Subtracting from 122242220 its reverse (22242221), we obtain a palindrome (99999999).

The spelling of 122242220 in words is "one hundred twenty-two million, two hundred forty-two thousand, two hundred twenty".