1221314414 has 16 divisors (see below), whose sum is σ = 1929112080. Its totient is φ = 578301120.

The previous prime is 1221314401. The next prime is 1221314429. The reversal of 1221314414 is 4144131221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221314414.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148802 + ... + 156794.

It is an arithmetic number, because the mean of its divisors is an integer number (120569505).

Almost surely, 2^1221314414 is an apocalyptic number.

1221314414 is a deficient number, since it is larger than the sum of its proper divisors (707797666).

1221314414 is a wasteful number, since it uses less digits than its factorization.

1221314414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12035.

The product of its digits is 768, while the sum is 23.

The square root of 1221314414 is about 34947.3091095724. The cubic root of 1221314414 is about 1068.9133329752.

Adding to 1221314414 its reverse (4144131221), we get a palindrome (5365445635).

The spelling of 1221314414 in words is "one billion, two hundred twenty-one million, three hundred fourteen thousand, four hundred fourteen".