1222222300 has 144 divisors (see below), whose sum is σ = 3056179392. Its totient is φ = 420710400.

The previous prime is 1222222289. The next prime is 1222222303. The reversal of 1222222300 is 32222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222222303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1225402 + ... + 1226398.

It is an arithmetic number, because the mean of its divisors is an integer number (21223468).

Almost surely, 2^1222222300 is an apocalyptic number.

1222222300 is a gapful number since it is divisible by the number (10) 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 1222222300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528089696).

1222222300 is an abundant number, since it is smaller than the sum of its proper divisors (1833957092).

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

1222222300 is a wasteful number, since it uses less digits than its factorization.

1222222300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1222222300 is about 34960.2960513781. The cubic root of 1222222300 is about 1069.1781326781.

Adding to 1222222300 its reverse (32222221), we get a palindrome (1254444521).

The spelling of 1222222300 in words is "one billion, two hundred twenty-two million, two hundred twenty-two thousand, three hundred".