212140304321 has 8 divisors (see below), whose sum is σ = 232279759488. Its totient is φ = 192143178000.

The previous prime is 212140304291. The next prime is 212140304347. The reversal of 212140304321 is 123403041212.

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-212140304321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212140304921) 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, 35579090 + ... + 35585051.

It is an arithmetic number, because the mean of its divisors is an integer number (29034969936).

Almost surely, 2^212140304321 is an apocalyptic number.

It is an amenable number.

212140304321 is a deficient number, since it is larger than the sum of its proper divisors (20139455167).

212140304321 is a wasteful number, since it uses less digits than its factorization.

212140304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71164423.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 212140304321 its reverse (123403041212), we get a palindrome (335543345533).

The spelling of 212140304321 in words is "two hundred twelve billion, one hundred forty million, three hundred four thousand, three hundred twenty-one".