1222631424 has 336 divisors, whose sum is σ = 4252764672. Its totient is φ = 330891264.

The previous prime is 1222631419. The next prime is 1222631461. The reversal of 1222631424 is 4241362221.

1222631424 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 631 + 4 + 24 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11870157 + ... + 11870259.

Almost surely, 2^1222631424 is an apocalyptic number.

1222631424 is a gapful number since it is divisible by the number (14) 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 1222631424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2126382336).

1222631424 is an abundant number, since it is smaller than the sum of its proper divisors (3030133248).

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

1222631424 is a wasteful number, since it uses less digits than its factorization.

1222631424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 138 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1222631424 is about 34966.1468280393. The cubic root of 1222631424 is about 1069.2974174803.

Adding to 1222631424 its reverse (4241362221), we get a palindrome (5463993645).

The spelling of 1222631424 in words is "one billion, two hundred twenty-two million, six hundred thirty-one thousand, four hundred twenty-four".