222101220 has 96 divisors (see below), whose sum is σ = 680795136. Its totient is φ = 53654400.

The previous prime is 222101207. The next prime is 222101233. The reversal of 222101220 is 22101222.

222101220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222101207) and next prime (222101233).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 222101196 and 222101205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321075 + ... + 321765.

It is an arithmetic number, because the mean of its divisors is an integer number (7091616).

Almost surely, 2^222101220 is an apocalyptic number.

222101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340397568).

222101220 is an abundant number, since it is smaller than the sum of its proper divisors (458693916).

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

222101220 is a wasteful number, since it uses less digits than its factorization.

222101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 222101220 is about 14903.0607594548. The cubic root of 222101220 is about 605.5969065024.

Adding to 222101220 its reverse (22101222), we get a palindrome (244202442).

The spelling of 222101220 in words is "two hundred twenty-two million, one hundred one thousand, two hundred twenty".