222101312220 has 72 divisors (see below), whose sum is σ = 673770137040. Its totient is φ = 59221493760.

The previous prime is 222101312203. The next prime is 222101312227. The reversal of 222101312220 is 22213101222.

222101312220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 222101312193 and 222101312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222101312227) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2102875 + ... + 2205965.

It is an arithmetic number, because the mean of its divisors is an integer number (9357918570).

Almost surely, 2^222101312220 is an apocalyptic number.

222101312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222101312220 is an abundant number, since it is smaller than the sum of its proper divisors (451668824820).

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

222101312220 is a wasteful number, since it uses less digits than its factorization.

222101312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115075 (or 115070 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222101312220 its reverse (22213101222), we get a palindrome (244314413442).

The spelling of 222101312220 in words is "two hundred twenty-two billion, one hundred one million, three hundred twelve thousand, two hundred twenty".