1224122638 has 8 divisors (see below), whose sum is σ = 1944194832. Its totient is φ = 576057696.

The previous prime is 1224122593. The next prime is 1224122651. The reversal of 1224122638 is 8362214221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18001770 + ... + 18001837.

It is an arithmetic number, because the mean of its divisors is an integer number (243024354).

Almost surely, 2^1224122638 is an apocalyptic number.

1224122638 is a deficient number, since it is larger than the sum of its proper divisors (720072194).

1224122638 is a wasteful number, since it uses less digits than its factorization.

1224122638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36003626.

The product of its digits is 9216, while the sum is 31.

The square root of 1224122638 is about 34987.4640121287. The cubic root of 1224122638 is about 1069.7319729285.

Adding to 1224122638 its reverse (8362214221), we get a palindrome (9586336859).

The spelling of 1224122638 in words is "one billion, two hundred twenty-four million, one hundred twenty-two thousand, six hundred thirty-eight".