121324213 has 2 divisors, whose sum is σ = 121324214. Its totient is φ = 121324212.

The previous prime is 121324211. The next prime is 121324219. The reversal of 121324213 is 312423121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117548964 + 3775249 = 10842^2 + 1943^2 .

It is a cyclic number.

It is not a de Polignac number, because 121324213 - 2¹ = 121324211 is a prime.

Together with 121324211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121324211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60662106 + 60662107.

It is an arithmetic number, because the mean of its divisors is an integer number (60662107).

Almost surely, 2^121324213 is an apocalyptic number.

It is an amenable number.

121324213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121324213 is an equidigital number, since it uses as much as digits as its factorization.

121324213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 121324213 is about 11014.7270960292. The cubic root of 121324213 is about 495.0501095413.

Adding to 121324213 its reverse (312423121), we get a palindrome (433747334).

The spelling of 121324213 in words is "one hundred twenty-one million, three hundred twenty-four thousand, two hundred thirteen".