212020433 has 2 divisors, whose sum is σ = 212020434. Its totient is φ = 212020432.

The previous prime is 212020427. The next prime is 212020483. The reversal of 212020433 is 334020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148547344 + 63473089 = 12188^2 + 7967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020433 is a prime.

It is not a weakly prime, because it can be changed into another prime (212020423) 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, 106010216 + 106010217.

It is an arithmetic number, because the mean of its divisors is an integer number (106010217).

Almost surely, 2^212020433 is an apocalyptic number.

It is an amenable number.

212020433 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020433 is an equidigital number, since it uses as much as digits as its factorization.

212020433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 212020433 is about 14560.9214337555. The cubic root of 212020433 is about 596.2923518417.

Adding to 212020433 its reverse (334020212), we get a palindrome (546040645).

The spelling of 212020433 in words is "two hundred twelve million, twenty thousand, four hundred thirty-three".