212212110 has 64 divisors (see below), whose sum is σ = 561199104. Its totient is φ = 50928000.

The previous prime is 212212093. The next prime is 212212123. The reversal of 212212110 is 11212212.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30147 + ... + 36513.

It is an arithmetic number, because the mean of its divisors is an integer number (8768736).

Almost surely, 2^212212110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212212110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280599552).

212212110 is an abundant number, since it is smaller than the sum of its proper divisors (348986994).

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

212212110 is a wasteful number, since it uses less digits than its factorization.

212212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 212212110 is about 14567.5018448600. The cubic root of 212212110 is about 596.4719903508.

Adding to 212212110 its reverse (11212212), we get a palindrome (223424322).

The spelling of 212212110 in words is "two hundred twelve million, two hundred twelve thousand, one hundred ten".