212145132 has 12 divisors (see below), whose sum is σ = 495005336. Its totient is φ = 70715040.

The previous prime is 212145119. The next prime is 212145137. The reversal of 212145132 is 231541212.

212145132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 212145099 and 212145108.

It is not an unprimeable number, because it can be changed into a prime (212145137) 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, 8839369 + ... + 8839392.

Almost surely, 2^212145132 is an apocalyptic number.

It is an amenable number.

212145132 is an abundant number, since it is smaller than the sum of its proper divisors (282860204).

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

212145132 is a wasteful number, since it uses less digits than its factorization.

212145132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17678768 (or 17678766 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 212145132 is about 14565.2027792269. The cubic root of 212145132 is about 596.4092312796.

Adding to 212145132 its reverse (231541212), we get a palindrome (443686344).

The spelling of 212145132 in words is "two hundred twelve million, one hundred forty-five thousand, one hundred thirty-two".