212231132 has 12 divisors (see below), whose sum is σ = 379307040. Its totient is φ = 103857696.

The previous prime is 212231119. The next prime is 212231137. The reversal of 212231132 is 231132212.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 212231132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212231137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564257 + ... + 564632.

It is an arithmetic number, because the mean of its divisors is an integer number (31608920).

Almost surely, 2^212231132 is an apocalyptic number.

It is an amenable number.

212231132 is a deficient number, since it is larger than the sum of its proper divisors (167075908).

212231132 is a wasteful number, since it uses less digits than its factorization.

212231132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128940 (or 1128938 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 212231132 is about 14568.1547218582. The cubic root of 212231132 is about 596.4898117516.

Adding to 212231132 its reverse (231132212), we get a palindrome (443363344).

It can be divided in two parts, 212 and 231132, that multiplied together give a palindrome (48999984).

The spelling of 212231132 in words is "two hundred twelve million, two hundred thirty-one thousand, one hundred thirty-two".