212122230 has 16 divisors (see below), whose sum is σ = 509093424. Its totient is φ = 56565920.

The previous prime is 212122199. The next prime is 212122237. The reversal of 212122230 is 32221212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3535341 + ... + 3535400.

It is an arithmetic number, because the mean of its divisors is an integer number (31818339).

Almost surely, 2^212122230 is an apocalyptic number.

212122230 is an abundant number, since it is smaller than the sum of its proper divisors (296971194).

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

212122230 is a wasteful number, since it uses less digits than its factorization.

212122230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070751.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 212122230 is about 14564.4165691592. The cubic root of 212122230 is about 596.3877688408.

Adding to 212122230 its reverse (32221212), we get a palindrome (244343442).

The spelling of 212122230 in words is "two hundred twelve million, one hundred twenty-two thousand, two hundred thirty".