222120111220 has 96 divisors (see below), whose sum is σ = 575447846400. Its totient is φ = 70332455424.

The previous prime is 222120111209. The next prime is 222120111221. The reversal of 222120111220 is 22111021222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 222120111194 and 222120111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120111221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1095955 + ... + 1282714.

It is an arithmetic number, because the mean of its divisors is an integer number (5994248400).

Almost surely, 2^222120111220 is an apocalyptic number.

222120111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120111220 is an abundant number, since it is smaller than the sum of its proper divisors (353327735180).

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

222120111220 is a wasteful number, since it uses less digits than its factorization.

222120111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378737 (or 2378735 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222120111220 its reverse (22111021222), we get a palindrome (244231132442).

The spelling of 222120111220 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty".