212201263 has 4 divisors (see below), whose sum is σ = 212509048. Its totient is φ = 211893480.

The previous prime is 212201239. The next prime is 212201333. The reversal of 212201263 is 362102212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212201263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212201263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152856 + ... + 154237.

It is an arithmetic number, because the mean of its divisors is an integer number (53127262).

Almost surely, 2^212201263 is an apocalyptic number.

212201263 is a deficient number, since it is larger than the sum of its proper divisors (307785).

212201263 is an equidigital number, since it uses as much as digits as its factorization.

212201263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307784.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 212201263 is about 14567.1295387938. The cubic root of 212201263 is about 596.4618274970.

Adding to 212201263 its reverse (362102212), we get a palindrome (574303475).

The spelling of 212201263 in words is "two hundred twelve million, two hundred one thousand, two hundred sixty-three".