212123332 has 6 divisors (see below), whose sum is σ = 371215838. Its totient is φ = 106061664.

The previous prime is 212123323. The next prime is 212123339. The reversal of 212123332 is 233321212.

212123332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 201469636 + 10653696 = 14194^2 + 3264^2 .

It is not an unprimeable number, because it can be changed into a prime (212123339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26515413 + ... + 26515420.

Almost surely, 2^212123332 is an apocalyptic number.

It is an amenable number.

212123332 is a deficient number, since it is larger than the sum of its proper divisors (159092506).

212123332 is a wasteful number, since it uses less digits than its factorization.

212123332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53030837 (or 53030835 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 212123332 is about 14564.4544010409. The cubic root of 212123332 is about 596.3888016073.

Adding to 212123332 its reverse (233321212), we get a palindrome (445444544).

The spelling of 212123332 in words is "two hundred twelve million, one hundred twenty-three thousand, three hundred thirty-two".