212426227 has 4 divisors (see below), whose sum is σ = 228766720. Its totient is φ = 196085736.

The previous prime is 212426219. The next prime is 212426233. The reversal of 212426227 is 722624212.

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 212426227 - 2³ = 212426219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212426195 and 212426204.

It is not an unprimeable number, because it can be changed into a prime (212426257) 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 in 3 ways as a sum of consecutive naturals, for example, 8170227 + ... + 8170252.

It is an arithmetic number, because the mean of its divisors is an integer number (57191680).

Almost surely, 2^212426227 is an apocalyptic number.

212426227 is a deficient number, since it is larger than the sum of its proper divisors (16340493).

212426227 is a wasteful number, since it uses less digits than its factorization.

212426227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16340492.

The product of its digits is 5376, while the sum is 28.

The square root of 212426227 is about 14574.8491244335. The cubic root of 212426227 is about 596.6725316292.

The spelling of 212426227 in words is "two hundred twelve million, four hundred twenty-six thousand, two hundred twenty-seven".