1221234424 has 16 divisors (see below), whose sum is σ = 2410331400. Its totient is φ = 578479392.

The previous prime is 1221234419. The next prime is 1221234433. The reversal of 1221234424 is 4244321221.

It is a super-2 number, since 2×1221234424² = 2982827036725223552, which contains 22 as substring.

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, 4017067 + ... + 4017370.

Almost surely, 2^1221234424 is an apocalyptic number.

It is an amenable number.

1221234424 is a deficient number, since it is larger than the sum of its proper divisors (1189096976).

1221234424 is a wasteful number, since it uses less digits than its factorization.

1221234424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8034462 (or 8034458 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 1221234424 is about 34946.1646536498. The cubic root of 1221234424 is about 1068.8899963025.

Adding to 1221234424 its reverse (4244321221), we get a palindrome (5465555645).

The spelling of 1221234424 in words is "one billion, two hundred twenty-one million, two hundred thirty-four thousand, four hundred twenty-four".