1222222012 has 24 divisors (see below), whose sum is σ = 2353991472. Its totient is φ = 550636800.

The previous prime is 1222222007. The next prime is 1222222031. The reversal of 1222222012 is 2102222221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117939 + ... + 127882.

It is an arithmetic number, because the mean of its divisors is an integer number (98082978).

Almost surely, 2^1222222012 is an apocalyptic number.

It is an amenable number.

1222222012 is a deficient number, since it is larger than the sum of its proper divisors (1131769460).

1222222012 is a wasteful number, since it uses less digits than its factorization.

1222222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245949 (or 245947 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1222222012 is about 34960.2919324196. The cubic root of 1222222012 is about 1069.1780486991.

Adding to 1222222012 its reverse (2102222221), we get a palindrome (3324444233).

The spelling of 1222222012 in words is "one billion, two hundred twenty-two million, two hundred twenty-two thousand, twelve".