321242111 has 2 divisors, whose sum is σ = 321242112. Its totient is φ = 321242110.

The previous prime is 321242059. The next prime is 321242123. The reversal of 321242111 is 111242123.

It is a strong prime.

It is an emirp because it is prime and its reverse (111242123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321242111 - 2²⁶ = 254133247 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321242111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321242191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160621055 + 160621056.

It is an arithmetic number, because the mean of its divisors is an integer number (160621056).

Almost surely, 2^321242111 is an apocalyptic number.

321242111 is a deficient number, since it is larger than the sum of its proper divisors (1).

321242111 is an equidigital number, since it uses as much as digits as its factorization.

321242111 is an evil number, because the sum of its binary digits is even.

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

The square root of 321242111 is about 17923.2282527451. The cubic root of 321242111 is about 684.8742277121.

Adding to 321242111 its reverse (111242123), we get a palindrome (432484234).

The spelling of 321242111 in words is "three hundred twenty-one million, two hundred forty-two thousand, one hundred eleven".