212822226 has 48 divisors (see below), whose sum is σ = 474495840. Its totient is φ = 68898240.

The previous prime is 212822221. The next prime is 212822257. The reversal of 212822226 is 622228212.

It is a self number, because there is not a number n which added to its sum of digits gives 212822226.

It is not an unprimeable number, because it can be changed into a prime (212822221) 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, 208345 + ... + 209363.

It is an arithmetic number, because the mean of its divisors is an integer number (9885330).

Almost surely, 2^212822226 is an apocalyptic number.

212822226 is an abundant number, since it is smaller than the sum of its proper divisors (261673614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212822226 is a wasteful number, since it uses less digits than its factorization.

212822226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1348 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 212822226 is about 14588.4278111111. The cubic root of 212822226 is about 597.0430681959.

The spelling of 212822226 in words is "two hundred twelve million, eight hundred twenty-two thousand, two hundred twenty-six".