1220332424 has 16 divisors (see below), whose sum is σ = 2288515020. Its totient is φ = 610061760.

The previous prime is 1220332417. The next prime is 1220332427. The reversal of 1220332424 is 4242330221.

It can be written as a sum of positive squares in 2 ways, for example, as 1160764900 + 59567524 = 34070^2 + 7718^2 .

It is a super-2 number, since 2×1220332424² = 2978422450131431552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220332424.

It is not an unprimeable number, because it can be changed into a prime (1220332427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61922 + ... + 79214.

Almost surely, 2^1220332424 is an apocalyptic number.

It is an amenable number.

1220332424 is a deficient number, since it is larger than the sum of its proper divisors (1068182596).

1220332424 is a wasteful number, since it uses less digits than its factorization.

1220332424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26120 (or 26116 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1220332424 is about 34933.2567047506. The cubic root of 1220332424 is about 1068.6267718620.

Adding to 1220332424 its reverse (4242330221), we get a palindrome (5462662645).

The spelling of 1220332424 in words is "one billion, two hundred twenty million, three hundred thirty-two thousand, four hundred twenty-four".