212012033321 has 8 divisors (see below), whose sum is σ = 231335404704. Its totient is φ = 192696920320.

The previous prime is 212012033281. The next prime is 212012033407. The reversal of 212012033321 is 123330210212.

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-212012033321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212012033293 and 212012033302.

It is not an unprimeable number, because it can be changed into a prime (212012033621) 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, 2010851 + ... + 2113656.

It is an arithmetic number, because the mean of its divisors is an integer number (28916925588).

Almost surely, 2^212012033321 is an apocalyptic number.

It is an amenable number.

212012033321 is a deficient number, since it is larger than the sum of its proper divisors (19323371383).

212012033321 is a wasteful number, since it uses less digits than its factorization.

212012033321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129191.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212012033321 its reverse (123330210212), we get a palindrome (335342243533).

The spelling of 212012033321 in words is "two hundred twelve billion, twelve million, thirty-three thousand, three hundred twenty-one".