212322232121 has 2 divisors, whose sum is σ = 212322232122. Its totient is φ = 212322232120.

The previous prime is 212322232097. The next prime is 212322232123. The reversal of 212322232121 is 121232223212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198861591721 + 13460640400 = 445939^2 + 116020^2 .

It is a cyclic number.

It is not a de Polignac number, because 212322232121 - 2¹⁴ = 212322215737 is a prime.

Together with 212322232123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212322232123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106161116060 + 106161116061.

It is an arithmetic number, because the mean of its divisors is an integer number (106161116061).

Almost surely, 2^212322232121 is an apocalyptic number.

It is an amenable number.

212322232121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212322232121 is an equidigital number, since it uses as much as digits as its factorization.

212322232121 is an evil number, because the sum of its binary digits is even.

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

Adding to 212322232121 its reverse (121232223212), we get a palindrome (333554455333).

The spelling of 212322232121 in words is "two hundred twelve billion, three hundred twenty-two million, two hundred thirty-two thousand, one hundred twenty-one".