212111100222 has 64 divisors (see below), whose sum is σ = 488526888960. Its totient is φ = 60140779776.

The previous prime is 212111100151. The next prime is 212111100247. The reversal of 212111100222 is 222001111212.

212111100222 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212111100222² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30130179 + ... + 30137217.

It is an arithmetic number, because the mean of its divisors is an integer number (7633232640).

Almost surely, 2^212111100222 is an apocalyptic number.

212111100222 is an abundant number, since it is smaller than the sum of its proper divisors (276415788738).

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

212111100222 is a wasteful number, since it uses less digits than its factorization.

212111100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12425.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212111100222 its reverse (222001111212), we get a palindrome (434112211434).

The spelling of 212111100222 in words is "two hundred twelve billion, one hundred eleven million, one hundred thousand, two hundred twenty-two".