1222503450 has 96 divisors (see below), whose sum is σ = 3535785600. Its totient is φ = 279417600.

The previous prime is 1222503427. The next prime is 1222503461. The reversal of 1222503450 is 543052221.

1222503450 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222503450.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39570 + ... + 63330.

It is an arithmetic number, because the mean of its divisors is an integer number (36831100).

Almost surely, 2^1222503450 is an apocalyptic number.

1222503450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222503450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767892800).

1222503450 is an abundant number, since it is smaller than the sum of its proper divisors (2313282150).

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

1222503450 is a wasteful number, since it uses less digits than its factorization.

1222503450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23797 (or 23778 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1222503450 is about 34964.3168101423. The cubic root of 1222503450 is about 1069.2601080509.

Adding to 1222503450 its reverse (543052221), we get a palindrome (1765555671).

The spelling of 1222503450 in words is "one billion, two hundred twenty-two million, five hundred three thousand, four hundred fifty".