1222302400 has 168 divisors, whose sum is σ = 3371520816. Its totient is φ = 432230400.

The previous prime is 1222302371. The next prime is 1222302401. The reversal of 1222302400 is 42032221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1222302401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 650262 + ... + 652138.

Almost surely, 2^1222302400 is an apocalyptic number.

1222302400 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 1222302400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685760408).

1222302400 is an abundant number, since it is smaller than the sum of its proper divisors (2149218416).

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

1222302400 is a wasteful number, since it uses less digits than its factorization.

1222302400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947 (or 1932 counting only the distinct ones).

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

The square root of 1222302400 is about 34961.4416178738. The cubic root of 1222302400 is about 1069.2014888487.

Adding to 1222302400 its reverse (42032221), we get a palindrome (1264334621).

The spelling of 1222302400 in words is "one billion, two hundred twenty-two million, three hundred two thousand, four hundred".