122221122220 has 12 divisors (see below), whose sum is σ = 256664356704. Its totient is φ = 48888448880.

The previous prime is 122221122119. The next prime is 122221122259. The reversal of 122221122220 is 22221122221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055528036 + ... + 3055528075.

It is an arithmetic number, because the mean of its divisors is an integer number (21388696392).

Almost surely, 2^122221122220 is an apocalyptic number.

122221122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221122220 is an abundant number, since it is smaller than the sum of its proper divisors (134443234484).

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

122221122220 is a wasteful number, since it uses less digits than its factorization.

122221122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111056120 (or 6111056118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122221122220 its reverse (22221122221), we get a palindrome (144442244441).

Subtracting from 122221122220 its reverse (22221122221), we obtain a palindrome (99999999999).

The spelling of 122221122220 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty".