212203193 has 2 divisors, whose sum is σ = 212203194. Its totient is φ = 212203192.

The previous prime is 212203141. The next prime is 212203223. The reversal of 212203193 is 391302212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167754304 + 44448889 = 12952^2 + 6667^2 .

It is a cyclic number.

It is not a de Polignac number, because 212203193 - 2¹⁰ = 212202169 is a prime.

It is not a weakly prime, because it can be changed into another prime (212203093) 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, 106101596 + 106101597.

It is an arithmetic number, because the mean of its divisors is an integer number (106101597).

Almost surely, 2^212203193 is an apocalyptic number.

It is an amenable number.

212203193 is a deficient number, since it is larger than the sum of its proper divisors (1).

212203193 is an equidigital number, since it uses as much as digits as its factorization.

212203193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 212203193 is about 14567.1957836778. The cubic root of 212203193 is about 596.4636357927.

The spelling of 212203193 in words is "two hundred twelve million, two hundred three thousand, one hundred ninety-three".