222120100220 has 24 divisors (see below), whose sum is σ = 477829095408. Its totient is φ = 86681014400.

The previous prime is 222120100219. The next prime is 222120100231. The reversal of 222120100220 is 22001021222.

It is a junction number, because it is equal to n+sod(n) for n = 222120100195 and 222120100204.

It is a congruent number.

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, 135438266 + ... + 135439905.

It is an arithmetic number, because the mean of its divisors is an integer number (19909545642).

Almost surely, 2^222120100220 is an apocalyptic number.

222120100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120100220 is an abundant number, since it is smaller than the sum of its proper divisors (255708995188).

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

222120100220 is a wasteful number, since it uses less digits than its factorization.

222120100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270878221 (or 270878219 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222120100220 its reverse (22001021222), we get a palindrome (244121121442).

The spelling of 222120100220 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred thousand, two hundred twenty".