222322100220 has 192 divisors, whose sum is σ = 757277337600. Its totient is φ = 53701297920.

The previous prime is 222322100177. The next prime is 222322100227. The reversal of 222322100220 is 22001223222.

222322100220 is a `hidden beast` number, since 2 + 2 + 232 + 210 + 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 = 222322100193 and 222322100202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222322100227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1577821 + ... + 1712939.

It is an arithmetic number, because the mean of its divisors is an integer number (3944152800).

Almost surely, 2^222322100220 is an apocalyptic number.

222322100220 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 222322100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378638668800).

222322100220 is an abundant number, since it is smaller than the sum of its proper divisors (534955237380).

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

222322100220 is a wasteful number, since it uses less digits than its factorization.

222322100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135425 (or 135417 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 222322100220 its reverse (22001223222), we get a palindrome (244323323442).

The spelling of 222322100220 in words is "two hundred twenty-two billion, three hundred twenty-two million, one hundred thousand, two hundred twenty".