1222320222 has 24 divisors (see below), whose sum is σ = 2654851680. Its totient is φ = 406441440.

The previous prime is 1222320221. The next prime is 1222320227. The reversal of 1222320222 is 2220232221.

1222320222 is a `hidden beast` number, since 122 + 2 + 320 + 222 = 666.

It is a super-2 number, since 2×1222320222² = 2988133450220258568, which contains 22 as substring.

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 = 1222320195 and 1222320204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222320221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75654 + ... + 90377.

It is an arithmetic number, because the mean of its divisors is an integer number (110618820).

Almost surely, 2^1222320222 is an apocalyptic number.

1222320222 is an abundant number, since it is smaller than the sum of its proper divisors (1432531458).

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

1222320222 is a wasteful number, since it uses less digits than its factorization.

1222320222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166448 (or 166445 counting only the distinct ones).

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

The square root of 1222320222 is about 34961.6964977388. The cubic root of 1222320222 is about 1069.2066853850.

Adding to 1222320222 its reverse (2220232221), we get a palindrome (3442552443).

The spelling of 1222320222 in words is "one billion, two hundred twenty-two million, three hundred twenty thousand, two hundred twenty-two".