212022222 has 32 divisors (see below), whose sum is σ = 433894560. Its totient is φ = 69050880.

The previous prime is 212022191. The next prime is 212022227. The reversal of 212022222 is 222220212.

212022222 is a modest number, since divided by 22222 gives 2120 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45522 + ... + 49962.

It is an arithmetic number, because the mean of its divisors is an integer number (13559205).

Almost surely, 2^212022222 is an apocalyptic number.

212022222 is an abundant number, since it is smaller than the sum of its proper divisors (221872338).

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

212022222 is a wasteful number, since it uses less digits than its factorization.

212022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 212022222 is about 14560.9828651777. The cubic root of 212022222 is about 596.2940289819.

Adding to 212022222 its reverse (222220212), we get a palindrome (434242434).

It can be divided in two parts, 2120 and 22222, that added together give a palindrome (24342).

The spelling of 212022222 in words is "two hundred twelve million, twenty-two thousand, two hundred twenty-two".