1222221300 has 36 divisors (see below), whose sum is σ = 3536294496. Its totient is φ = 325925600.

The previous prime is 1222221263. The next prime is 1222221317. The reversal of 1222221300 is 31222221.

It is a happy number.

1222221300 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1222221300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2036736 + ... + 2037335.

Almost surely, 2^1222221300 is an apocalyptic number.

1222221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222221300 is an abundant number, since it is smaller than the sum of its proper divisors (2314073196).

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

1222221300 is a wasteful number, since it uses less digits than its factorization.

1222221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074088 (or 4074081 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1222221300 is about 34960.2817494367. The cubic root of 1222221300 is about 1069.1778410840.

Adding to 1222221300 its reverse (31222221), we get a palindrome (1253443521).

The spelling of 1222221300 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred".