1214121329 has 2 divisors, whose sum is σ = 1214121330. Its totient is φ = 1214121328.

The previous prime is 1214121319. The next prime is 1214121331. The reversal of 1214121329 is 9231214121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636199729 + 577921600 = 25223^2 + 24040^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214121329 - 2⁴ = 1214121313 is a prime.

It is a Sophie Germain prime.

Together with 1214121331, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1214121298 and 1214121307.

It is not a weakly prime, because it can be changed into another prime (1214121319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607060664 + 607060665.

It is an arithmetic number, because the mean of its divisors is an integer number (607060665).

Almost surely, 2^1214121329 is an apocalyptic number.

It is an amenable number.

1214121329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214121329 is an equidigital number, since it uses as much as digits as its factorization.

1214121329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 1214121329 is about 34844.2438431371. The cubic root of 1214121329 is about 1066.8106997668.

The spelling of 1214121329 in words is "one billion, two hundred fourteen million, one hundred twenty-one thousand, three hundred twenty-nine".