212023243121 has 8 divisors (see below), whose sum is σ = 223186920000. Its totient is φ = 200860022160.

The previous prime is 212023243111. The next prime is 212023243129. The reversal of 212023243121 is 121342320212.

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-212023243121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212023243129) 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, 1274255 + ... + 1431003.

It is an arithmetic number, because the mean of its divisors is an integer number (27898365000).

Almost surely, 2^212023243121 is an apocalyptic number.

It is an amenable number.

212023243121 is a deficient number, since it is larger than the sum of its proper divisors (11163676879).

212023243121 is a wasteful number, since it uses less digits than its factorization.

212023243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227959.

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

Adding to 212023243121 its reverse (121342320212), we get a palindrome (333365563333).

The spelling of 212023243121 in words is "two hundred twelve billion, twenty-three million, two hundred forty-three thousand, one hundred twenty-one".