1222313212 has 12 divisors (see below), whose sum is σ = 2139837840. Its totient is φ = 610930976.

The previous prime is 1222313177. The next prime is 1222313221. The reversal of 1222313212 is 2123132221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222313212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43912 + ... + 66127.

It is an arithmetic number, because the mean of its divisors is an integer number (178319820).

Almost surely, 2^1222313212 is an apocalyptic number.

It is an amenable number.

1222313212 is a deficient number, since it is larger than the sum of its proper divisors (917524628).

1222313212 is a wasteful number, since it uses less digits than its factorization.

1222313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112820 (or 112818 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1222313212 is about 34961.5962450229. The cubic root of 1222313212 is about 1069.2046414162.

Adding to 1222313212 its reverse (2123132221), we get a palindrome (3345445433).

The spelling of 1222313212 in words is "one billion, two hundred twenty-two million, three hundred thirteen thousand, two hundred twelve".