212212310321 has 8 divisors (see below), whose sum is σ = 235428141600. Its totient is φ = 189650446240.

The previous prime is 212212310293. The next prime is 212212310341. The reversal of 212212310321 is 123013212212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212212310321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212212310293 and 212212310302.

It is not an unprimeable number, because it can be changed into a prime (212212310341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163491116 + ... + 163492413.

It is an arithmetic number, because the mean of its divisors is an integer number (29428517700).

Almost surely, 2^212212310321 is an apocalyptic number.

It is an amenable number.

212212310321 is a deficient number, since it is larger than the sum of its proper divisors (23215831279).

212212310321 is a wasteful number, since it uses less digits than its factorization.

212212310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326983599.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212212310321 its reverse (123013212212), we get a palindrome (335225522533).

The spelling of 212212310321 in words is "two hundred twelve billion, two hundred twelve million, three hundred ten thousand, three hundred twenty-one".