1222212322 has 4 divisors (see below), whose sum is σ = 1833318486. Its totient is φ = 611106160.

The previous prime is 1222212281. The next prime is 1222212359. The reversal of 1222212322 is 2232122221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 980378721 + 241833601 = 31311^2 + 15551^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222212322.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305553079 + ... + 305553082.

Almost surely, 2^1222212322 is an apocalyptic number.

1222212322 is a deficient number, since it is larger than the sum of its proper divisors (611106164).

1222212322 is an equidigital number, since it uses as much as digits as its factorization.

1222212322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611106163.

The product of its digits is 384, while the sum is 19.

The square root of 1222212322 is about 34960.1533463456. The cubic root of 1222212322 is about 1069.1752231451.

Adding to 1222212322 its reverse (2232122221), we get a palindrome (3454334543).

The spelling of 1222212322 in words is "one billion, two hundred twenty-two million, two hundred twelve thousand, three hundred twenty-two".