1222412212 has 96 divisors (see below), whose sum is σ = 2641766400. Its totient is φ = 493920000.

The previous prime is 1222412197. The next prime is 1222412239. The reversal of 1222412212 is 2122142221.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1222412212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1743462 + ... + 1744162.

It is an arithmetic number, because the mean of its divisors is an integer number (27518400).

Almost surely, 2^1222412212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222412212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320883200).

1222412212 is an abundant number, since it is smaller than the sum of its proper divisors (1419354188).

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

1222412212 is a wasteful number, since it uses less digits than its factorization.

1222412212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 782 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 1222412212 is about 34963.0120555996. The cubic root of 1222412212 is about 1069.2335070133.

Adding to 1222412212 its reverse (2122142221), we get a palindrome (3344554433).

The spelling of 1222412212 in words is "one billion, two hundred twenty-two million, four hundred twelve thousand, two hundred twelve".