1222202212 has 72 divisors (see below), whose sum is σ = 2700210240. Its totient is φ = 470256000.

The previous prime is 1222202209. The next prime is 1222202213. The reversal of 1222202212 is 2122022221.

It is not an unprimeable number, because it can be changed into a prime (1222202213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3141714 + ... + 3142102.

It is an arithmetic number, because the mean of its divisors is an integer number (37502920).

Almost surely, 2^1222202212 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 1222202212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350105120).

1222202212 is an abundant number, since it is smaller than the sum of its proper divisors (1478008028).

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

1222202212 is a wasteful number, since it uses less digits than its factorization.

1222202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 510 counting only the distinct ones).

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

The square root of 1222202212 is about 34960.0087528593. The cubic root of 1222202212 is about 1069.1722751054.

Adding to 1222202212 its reverse (2122022221), we get a palindrome (3344224433).

Subtracting 1222202212 from its reverse (2122022221), we obtain a square (899820009 = 29997²).

The spelling of 1222202212 in words is "one billion, two hundred twenty-two million, two hundred two thousand, two hundred twelve".