1222723424 has 96 divisors (see below), whose sum is σ = 2763694080. Its totient is φ = 528118272.

The previous prime is 1222723387. The next prime is 1222723429. The reversal of 1222723424 is 4243272221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222723429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448337 + ... + 451055.

It is an arithmetic number, because the mean of its divisors is an integer number (28788480).

Almost surely, 2^1222723424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222723424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381847040).

1222723424 is an abundant number, since it is smaller than the sum of its proper divisors (1540970656).

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

1222723424 is a wasteful number, since it uses less digits than its factorization.

1222723424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812 (or 2804 counting only the distinct ones).

The product of its digits is 10752, while the sum is 29.

The square root of 1222723424 is about 34967.4623614583. The cubic root of 1222723424 is about 1069.3242374723.

Adding to 1222723424 its reverse (4243272221), we get a palindrome (5465995645).

The spelling of 1222723424 in words is "one billion, two hundred twenty-two million, seven hundred twenty-three thousand, four hundred twenty-four".