212132222 has 16 divisors (see below), whose sum is σ = 341184960. Its totient is φ = 98562048.

The previous prime is 212132213. The next prime is 212132227. The reversal of 212132222 is 222231212.

It is a super-2 number, since 2×212132222² = 90000159221314568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 212132222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212132227) 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, 36803 + ... + 42174.

It is an arithmetic number, because the mean of its divisors is an integer number (21324060).

Almost surely, 2^212132222 is an apocalyptic number.

212132222 is a deficient number, since it is larger than the sum of its proper divisors (129052738).

212132222 is a wasteful number, since it uses less digits than its factorization.

212132222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79075.

The product of its digits is 192, while the sum is 17.

The square root of 212132222 is about 14564.7595929353. The cubic root of 212132222 is about 596.3971329592.

Adding to 212132222 its reverse (222231212), we get a palindrome (434363434).

It can be divided in two parts, 2121 and 32222, that added together give a palindrome (34343).

The spelling of 212132222 in words is "two hundred twelve million, one hundred thirty-two thousand, two hundred twenty-two".