212193803 has 2 divisors, whose sum is σ = 212193804. Its totient is φ = 212193802.

The previous prime is 212193769. The next prime is 212193809. The reversal of 212193803 is 308391212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212193803 - 2⁶ = 212193739 is a prime.

It is not a weakly prime, because it can be changed into another prime (212193809) 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, 106096901 + 106096902.

It is an arithmetic number, because the mean of its divisors is an integer number (106096902).

Almost surely, 2^212193803 is an apocalyptic number.

212193803 is a deficient number, since it is larger than the sum of its proper divisors (1).

212193803 is an equidigital number, since it uses as much as digits as its factorization.

212193803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 212193803 is about 14566.8734806066. The cubic root of 212193803 is about 596.4548378161.

The spelling of 212193803 in words is "two hundred twelve million, one hundred ninety-three thousand, eight hundred three".