122222120220 has 72 divisors (see below), whose sum is σ = 377735563296. Its totient is φ = 31977608832.

The previous prime is 122222120203. The next prime is 122222120233. The reversal of 122222120220 is 22021222221.

122222120220 is a `hidden beast` number, since 1 + 222 + 221 + 2 + 0 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122222120193 and 122222120202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6396232 + ... + 6415311.

It is an arithmetic number, because the mean of its divisors is an integer number (5246327268).

Almost surely, 2^122222120220 is an apocalyptic number.

122222120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122222120220 is an abundant number, since it is smaller than the sum of its proper divisors (255513443076).

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

122222120220 is a wasteful number, since it uses less digits than its factorization.

122222120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811611 (or 12811606 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 122222120220 its reverse (22021222221), we get a palindrome (144243342441).

The spelling of 122222120220 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, two hundred twenty".