212445283 has 2 divisors, whose sum is σ = 212445284. Its totient is φ = 212445282.

The previous prime is 212445269. The next prime is 212445287. The reversal of 212445283 is 382544212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212445283 is a prime.

It is not a weakly prime, because it can be changed into another prime (212445287) 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, 106222641 + 106222642.

It is an arithmetic number, because the mean of its divisors is an integer number (106222642).

Almost surely, 2^212445283 is an apocalyptic number.

212445283 is a deficient number, since it is larger than the sum of its proper divisors (1).

212445283 is an equidigital number, since it uses as much as digits as its factorization.

212445283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 31.

The square root of 212445283 is about 14575.5028386674. The cubic root of 212445283 is about 596.6903728847.

Adding to 212445283 its reverse (382544212), we get a palindrome (594989495).

The spelling of 212445283 in words is "two hundred twelve million, four hundred forty-five thousand, two hundred eighty-three".