1222321300 has 72 divisors (see below), whose sum is σ = 2799890240. Its totient is φ = 461894400.

The previous prime is 1222321297. The next prime is 1222321337. The reversal of 1222321300 is 31232221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 924640 + ... + 925960.

Almost surely, 2^1222321300 is an apocalyptic number.

1222321300 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 1222321300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399945120).

1222321300 is an abundant number, since it is smaller than the sum of its proper divisors (1577568940).

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

1222321300 is a wasteful number, since it uses less digits than its factorization.

1222321300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1834 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1222321300 is about 34961.7119146074. The cubic root of 1222321300 is about 1069.2069997065.

Adding to 1222321300 its reverse (31232221), we get a palindrome (1253553521).

The spelling of 1222321300 in words is "one billion, two hundred twenty-two million, three hundred twenty-one thousand, three hundred".