212001233 has 2 divisors, whose sum is σ = 212001234. Its totient is φ = 212001232.

The previous prime is 212001149. The next prime is 212001239. The reversal of 212001233 is 332100212.

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., 178035649 + 33965584 = 13343^2 + 5828^2 .

It is a cyclic number.

It is not a de Polignac number, because 212001233 - 2¹⁰ = 212000209 is a prime.

It is not a weakly prime, because it can be changed into another prime (212001239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000616 + 106000617.

It is an arithmetic number, because the mean of its divisors is an integer number (106000617).

Almost surely, 2^212001233 is an apocalyptic number.

It is an amenable number.

212001233 is a deficient number, since it is larger than the sum of its proper divisors (1).

212001233 is an equidigital number, since it uses as much as digits as its factorization.

212001233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 212001233 is about 14560.2621198933. The cubic root of 212001233 is about 596.2743517546.

Adding to 212001233 its reverse (332100212), we get a palindrome (544101445).

The spelling of 212001233 in words is "two hundred twelve million, one thousand, two hundred thirty-three".