122220220 has 12 divisors (see below), whose sum is σ = 256662504. Its totient is φ = 48888080.

The previous prime is 122220209. The next prime is 122220223. The reversal of 122220220 is 22022221.

It is a self number, because there is not a number n which added to its sum of digits gives 122220220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055486 + ... + 3055525.

It is an arithmetic number, because the mean of its divisors is an integer number (21388542).

Almost surely, 2^122220220 is an apocalyptic number.

122220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122220220 is an abundant number, since it is smaller than the sum of its proper divisors (134442284).

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

122220220 is a wasteful number, since it uses less digits than its factorization.

122220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111020 (or 6111018 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 122220220 is about 11055.3254135733. The cubic root of 122220220 is about 496.2658077096.

Adding to 122220220 its reverse (22022221), we get a palindrome (144242441).

The spelling of 122220220 in words is "one hundred twenty-two million, two hundred twenty thousand, two hundred twenty".