212203212311 has 4 divisors (see below), whose sum is σ = 212510308824. Its totient is φ = 211896115800.

The previous prime is 212203212307. The next prime is 212203212313. The reversal of 212203212311 is 113212302212.

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

It is a cyclic number.

It is not a de Polignac number, because 212203212311 - 2² = 212203212307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212203212313) 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, 153547220 + ... + 153548601.

It is an arithmetic number, because the mean of its divisors is an integer number (53127577206).

Almost surely, 2^212203212311 is an apocalyptic number.

212203212311 is a deficient number, since it is larger than the sum of its proper divisors (307096513).

212203212311 is an equidigital number, since it uses as much as digits as its factorization.

212203212311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307096512.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212203212311 its reverse (113212302212), we get a palindrome (325415514523).

The spelling of 212203212311 in words is "two hundred twelve billion, two hundred three million, two hundred twelve thousand, three hundred eleven".