121344213 has 4 divisors (see below), whose sum is σ = 161792288. Its totient is φ = 80896140.

The previous prime is 121344211. The next prime is 121344217. The reversal of 121344213 is 312443121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121344213 - 2¹ = 121344211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121344213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121344211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20224033 + ... + 20224038.

It is an arithmetic number, because the mean of its divisors is an integer number (40448072).

Almost surely, 2^121344213 is an apocalyptic number.

It is an amenable number.

121344213 is a deficient number, since it is larger than the sum of its proper divisors (40448075).

121344213 is an equidigital number, since it uses as much as digits as its factorization.

121344213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40448074.

The product of its digits is 576, while the sum is 21.

The square root of 121344213 is about 11015.6349340381. The cubic root of 121344213 is about 495.0773106469.

Adding to 121344213 its reverse (312443121), we get a palindrome (433787334).

The spelling of 121344213 in words is "one hundred twenty-one million, three hundred forty-four thousand, two hundred thirteen".