321202112111 has 2 divisors, whose sum is σ = 321202112112. Its totient is φ = 321202112110.

The previous prime is 321202112089. The next prime is 321202112197. The reversal of 321202112111 is 111211202123.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321202112111 - 2⁶ = 321202112047 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321202112111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321202112311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160601056055 + 160601056056.

It is an arithmetic number, because the mean of its divisors is an integer number (160601056056).

Almost surely, 2^321202112111 is an apocalyptic number.

321202112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

321202112111 is an equidigital number, since it uses as much as digits as its factorization.

321202112111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 321202112111 its reverse (111211202123), we get a palindrome (432413314234).

The spelling of 321202112111 in words is "three hundred twenty-one billion, two hundred two million, one hundred twelve thousand, one hundred eleven".