121214321 has 2 divisors, whose sum is σ = 121214322. Its totient is φ = 121214320.

The previous prime is 121214299. The next prime is 121214341. The reversal of 121214321 is 123412121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106090000 + 15124321 = 10300^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 121214321 - 2¹⁰ = 121213297 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 121214321.

It is not a weakly prime, because it can be changed into another prime (121214341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60607160 + 60607161.

It is an arithmetic number, because the mean of its divisors is an integer number (60607161).

Almost surely, 2^121214321 is an apocalyptic number.

It is an amenable number.

121214321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121214321 is an equidigital number, since it uses as much as digits as its factorization.

121214321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 121214321 is about 11009.7375536386. The cubic root of 121214321 is about 494.9005969837.

Adding to 121214321 its reverse (123412121), we get a palindrome (244626442).

The spelling of 121214321 in words is "one hundred twenty-one million, two hundred fourteen thousand, three hundred twenty-one".