212766226 has 4 divisors (see below), whose sum is σ = 319149342. Its totient is φ = 106383112.

The previous prime is 212766217. The next prime is 212766233. The reversal of 212766226 is 622667212.

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

It can be written as a sum of positive squares in only one way, i.e., 186295201 + 26471025 = 13649^2 + 5145^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212766191 and 212766200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53191555 + ... + 53191558.

Almost surely, 2^212766226 is an apocalyptic number.

212766226 is a deficient number, since it is larger than the sum of its proper divisors (106383116).

212766226 is a wasteful number, since it uses less digits than its factorization.

212766226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106383115.

The product of its digits is 24192, while the sum is 34.

The square root of 212766226 is about 14586.5083553262. The cubic root of 212766226 is about 596.9906968726.

The spelling of 212766226 in words is "two hundred twelve million, seven hundred sixty-six thousand, two hundred twenty-six".