1221344414 has 16 divisors (see below), whose sum is σ = 1865275776. Its totient is φ = 599655000.

The previous prime is 1221344401. The next prime is 1221344429. The reversal of 1221344414 is 4144431221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18509 + ... + 52775.

It is an arithmetic number, because the mean of its divisors is an integer number (116579736).

Almost surely, 2^1221344414 is an apocalyptic number.

1221344414 is a deficient number, since it is larger than the sum of its proper divisors (643931362).

1221344414 is a wasteful number, since it uses less digits than its factorization.

1221344414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34591.

The product of its digits is 3072, while the sum is 26.

The square root of 1221344414 is about 34947.7383245325. The cubic root of 1221344414 is about 1068.9220850588.

Adding to 1221344414 its reverse (4144431221), we get a palindrome (5365775635).

The spelling of 1221344414 in words is "one billion, two hundred twenty-one million, three hundred forty-four thousand, four hundred fourteen".