212011193 has 2 divisors, whose sum is σ = 212011194. Its totient is φ = 212011192.

The previous prime is 212011187. The next prime is 212011207. The reversal of 212011193 is 391110212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207734569 + 4276624 = 14413^2 + 2068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011193 is a prime.

It is not a weakly prime, because it can be changed into another prime (212011153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005596 + 106005597.

It is an arithmetic number, because the mean of its divisors is an integer number (106005597).

Almost surely, 2^212011193 is an apocalyptic number.

It is an amenable number.

212011193 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011193 is an equidigital number, since it uses as much as digits as its factorization.

212011193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 212011193 is about 14560.6041426858. The cubic root of 212011193 is about 596.2836894354.

The spelling of 212011193 in words is "two hundred twelve million, eleven thousand, one hundred ninety-three".