212523499 has 2 divisors, whose sum is σ = 212523500. Its totient is φ = 212523498.

The previous prime is 212523497. The next prime is 212523551. The reversal of 212523499 is 994325212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212523499 - 2¹ = 212523497 is a prime.

Together with 212523497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212523497) 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, 106261749 + 106261750.

It is an arithmetic number, because the mean of its divisors is an integer number (106261750).

Almost surely, 2^212523499 is an apocalyptic number.

212523499 is a deficient number, since it is larger than the sum of its proper divisors (1).

212523499 is an equidigital number, since it uses as much as digits as its factorization.

212523499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 212523499 is about 14578.1857238821. The cubic root of 212523499 is about 596.7635917502.

The spelling of 212523499 in words is "two hundred twelve million, five hundred twenty-three thousand, four hundred ninety-nine".