212222010 has 256 divisors, whose sum is σ = 706019328. Its totient is φ = 39398400.

The previous prime is 212222009. The next prime is 212222011. The reversal of 212222010 is 10222212.

It is an interprime number because it is at equal distance from previous prime (212222009) and next prime (212222011).

It is not an unprimeable number, because it can be changed into a prime (212222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1111015 + ... + 1111205.

It is an arithmetic number, because the mean of its divisors is an integer number (2757888).

Almost surely, 2^212222010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212222010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353009664).

212222010 is an abundant number, since it is smaller than the sum of its proper divisors (493797318).

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

212222010 is a wasteful number, since it uses less digits than its factorization.

212222010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 212222010 is about 14567.8416383485. The cubic root of 212222010 is about 596.4812656318.

Adding to 212222010 its reverse (10222212), we get a palindrome (222444222).

It can be divided in two parts, 21222 and 2010, that added together give a palindrome (23232).

The spelling of 212222010 in words is "two hundred twelve million, two hundred twenty-two thousand, ten".