321112212199 has 2 divisors, whose sum is σ = 321112212200. Its totient is φ = 321112212198.

The previous prime is 321112212107. The next prime is 321112212217. The reversal of 321112212199 is 991212211123.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321112212199 is a prime.

It is a super-2 number, since 2×321112212199² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321112212299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160556106099 + 160556106100.

It is an arithmetic number, because the mean of its divisors is an integer number (160556106100).

Almost surely, 2^321112212199 is an apocalyptic number.

321112212199 is a deficient number, since it is larger than the sum of its proper divisors (1).

321112212199 is an equidigital number, since it uses as much as digits as its factorization.

321112212199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 34.

The spelling of 321112212199 in words is "three hundred twenty-one billion, one hundred twelve million, two hundred twelve thousand, one hundred ninety-nine".