1222204152 has 64 divisors (see below), whose sum is σ = 3307762080. Its totient is φ = 374095872.

The previous prime is 1222204111. The next prime is 1222204163. The reversal of 1222204152 is 2514022221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50068 + ... + 70364.

Almost surely, 2^1222204152 is an apocalyptic number.

1222204152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222204152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653881040).

1222204152 is an abundant number, since it is smaller than the sum of its proper divisors (2085557928).

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

1222204152 is a wasteful number, since it uses less digits than its factorization.

1222204152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20512 (or 20508 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1222204152 is about 34960.0364988368. The cubic root of 1222204152 is about 1069.1728408037.

Adding to 1222204152 its reverse (2514022221), we get a palindrome (3736226373).

The spelling of 1222204152 in words is "one billion, two hundred twenty-two million, two hundred four thousand, one hundred fifty-two".