212249503 has 2 divisors, whose sum is σ = 212249504. Its totient is φ = 212249502.

The previous prime is 212249489. The next prime is 212249507. The reversal of 212249503 is 305942212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212249503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212249507) 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, 106124751 + 106124752.

It is an arithmetic number, because the mean of its divisors is an integer number (106124752).

Almost surely, 2^212249503 is an apocalyptic number.

212249503 is a deficient number, since it is larger than the sum of its proper divisors (1).

212249503 is an equidigital number, since it uses as much as digits as its factorization.

212249503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 212249503 is about 14568.7852273276. The cubic root of 212249503 is about 596.5070222304.

The spelling of 212249503 in words is "two hundred twelve million, two hundred forty-nine thousand, five hundred three".