212232121321 has 8 divisors (see below), whose sum is σ = 232725569184. Its totient is φ = 191938609920.

The previous prime is 212232121271. The next prime is 212232121337. The reversal of 212232121321 is 123121232212.

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

It is a cyclic number.

It is not a de Polignac number, because 212232121321 - 2⁹ = 212232120809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212232121292 and 212232121301.

It is not an unprimeable number, because it can be changed into a prime (212232127321) 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, 49981891 + ... + 49986136.

It is an arithmetic number, because the mean of its divisors is an integer number (29090696148).

Almost surely, 2^212232121321 is an apocalyptic number.

It is an amenable number.

212232121321 is a deficient number, since it is larger than the sum of its proper divisors (20493447863).

212232121321 is a wasteful number, since it uses less digits than its factorization.

212232121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99968231.

The product of its digits is 576, while the sum is 22.

Adding to 212232121321 its reverse (123121232212), we get a palindrome (335353353533).

The spelling of 212232121321 in words is "two hundred twelve billion, two hundred thirty-two million, one hundred twenty-one thousand, three hundred twenty-one".