212233213121 has 2 divisors, whose sum is σ = 212233213122. Its totient is φ = 212233213120.

The previous prime is 212233213081. The next prime is 212233213139. The reversal of 212233213121 is 121312332212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181741068721 + 30492144400 = 426311^2 + 174620^2 .

It is a cyclic number.

It is not a de Polignac number, because 212233213121 - 2⁶ = 212233213057 is a prime.

It is not a weakly prime, because it can be changed into another prime (212233213721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106116606560 + 106116606561.

It is an arithmetic number, because the mean of its divisors is an integer number (106116606561).

Almost surely, 2^212233213121 is an apocalyptic number.

It is an amenable number.

212233213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212233213121 is an equidigital number, since it uses as much as digits as its factorization.

212233213121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

Adding to 212233213121 its reverse (121312332212), we get a palindrome (333545545333).

The spelling of 212233213121 in words is "two hundred twelve billion, two hundred thirty-three million, two hundred thirteen thousand, one hundred twenty-one".