1222251200 has 42 divisors (see below), whose sum is σ = 3007505796. Its totient is φ = 488899840.

The previous prime is 1222251161. The next prime is 1222251241. The reversal of 1222251200 is 21522221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380354 + ... + 383553.

Almost surely, 2^1222251200 is an apocalyptic number.

1222251200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222251200 is an abundant number, since it is smaller than the sum of its proper divisors (1785254596).

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

1222251200 is an equidigital number, since it uses as much as digits as its factorization.

1222251200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763929 (or 763914 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1222251200 is about 34960.7093749540. The cubic root of 1222251200 is about 1069.1865596788.

Adding to 1222251200 its reverse (21522221), we get a palindrome (1243773421).

The spelling of 1222251200 in words is "one billion, two hundred twenty-two million, two hundred fifty-one thousand, two hundred".