1222212330 has 96 divisors (see below), whose sum is σ = 3253567824. Its totient is φ = 318210048.

The previous prime is 1222212281. The next prime is 1222212359. The reversal of 1222212330 is 332122221.

1222212330 is a `hidden beast` number, since 122 + 2 + 212 + 330 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1169024481 + 53187849 = 34191^2 + 7293^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1225392 + ... + 1226388.

Almost surely, 2^1222212330 is an apocalyptic number.

1222212330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222212330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626783912).

1222212330 is an abundant number, since it is smaller than the sum of its proper divisors (2031355494).

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

1222212330 is a wasteful number, since it uses less digits than its factorization.

1222212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1222212330 is about 34960.1534607616. The cubic root of 1222212330 is about 1069.1752254779.

Adding to 1222212330 its reverse (332122221), we get a palindrome (1554334551).

The spelling of 1222212330 in words is "one billion, two hundred twenty-two million, two hundred twelve thousand, three hundred thirty".