212223843 has 24 divisors (see below), whose sum is σ = 330621200. Its totient is φ = 130403520.

The previous prime is 212223839. The next prime is 212223853. The reversal of 212223843 is 348322212.

212223843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212223843 - 2² = 212223839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212223853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136233 + ... + 137781.

Almost surely, 2^212223843 is an apocalyptic number.

212223843 is a deficient number, since it is larger than the sum of its proper divisors (118397357).

212223843 is a wasteful number, since it uses less digits than its factorization.

212223843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739 (or 2736 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 212223843 is about 14567.9045507581. The cubic root of 212223843 is about 596.4829829325.

The spelling of 212223843 in words is "two hundred twelve million, two hundred twenty-three thousand, eight hundred forty-three".