212113100222321 has 4 divisors (see below), whose sum is σ = 212113341586944. Its totient is φ = 212112858857700.

The previous prime is 212113100222249. The next prime is 212113100222323. The reversal of 212113100222321 is 123222001311212.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212113100222321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212113100222323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119359265 + ... + 121123326.

It is an arithmetic number, because the mean of its divisors is an integer number (53028335396736).

Almost surely, 2^{212113100222321} is an apocalyptic number.

It is an amenable number.

212113100222321 is a deficient number, since it is larger than the sum of its proper divisors (241364623).

212113100222321 is an equidigital number, since it uses as much as digits as its factorization.

212113100222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241364622.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 212113100222321 its reverse (123222001311212), we get a palindrome (335335101533533).

The spelling of 212113100222321 in words is "two hundred twelve trillion, one hundred thirteen billion, one hundred million, two hundred twenty-two thousand, three hundred twenty-one".