212822229 has 32 divisors (see below), whose sum is σ = 297302400. Its totient is φ = 135336960.

The previous prime is 212822221. The next prime is 212822257. The reversal of 212822229 is 922228212.

It is not a de Polignac number, because 212822229 - 2³ = 212822221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212822196 and 212822205.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1188862 + ... + 1189040.

It is an arithmetic number, because the mean of its divisors is an integer number (9290700).

Almost surely, 2^212822229 is an apocalyptic number.

It is an amenable number.

212822229 is a deficient number, since it is larger than the sum of its proper divisors (84480171).

212822229 is a wasteful number, since it uses less digits than its factorization.

212822229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its digits is 4608, while the sum is 30.

The square root of 212822229 is about 14588.4279139323. The cubic root of 212822229 is about 597.0430710012.

The spelling of 212822229 in words is "two hundred twelve million, eight hundred twenty-two thousand, two hundred twenty-nine".