212120222 has 16 divisors (see below), whose sum is σ = 324103680. Its totient is φ = 104091672.

The previous prime is 212120221. The next prime is 212120231. The reversal of 212120222 is 222021212.

212120222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212120197 and 212120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120221) 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, 100793 + ... + 102875.

It is an arithmetic number, because the mean of its divisors is an integer number (20256480).

Almost surely, 2^212120222 is an apocalyptic number.

212120222 is a deficient number, since it is larger than the sum of its proper divisors (111983458).

212120222 is a wasteful number, since it uses less digits than its factorization.

212120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212120222 is about 14564.3476338626. The cubic root of 212120222 is about 596.3858869849.

Adding to 212120222 its reverse (222021212), we get a palindrome (434141434).

The spelling of 212120222 in words is "two hundred twelve million, one hundred twenty thousand, two hundred twenty-two".