212132113 has 4 divisors (see below), whose sum is σ = 214319140. Its totient is φ = 209945088.

The previous prime is 212132077. The next prime is 212132119. The reversal of 212132113 is 311231212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41254929 + 170877184 = 6423^2 + 13072^2 .

It is a cyclic number.

It is not a de Polignac number, because 212132113 - 2¹³ = 212123921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212132119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093368 + ... + 1093561.

It is an arithmetic number, because the mean of its divisors is an integer number (53579785).

Almost surely, 2^212132113 is an apocalyptic number.

It is an amenable number.

212132113 is a deficient number, since it is larger than the sum of its proper divisors (2187027).

212132113 is an equidigital number, since it uses as much as digits as its factorization.

212132113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187026.

The product of its digits is 72, while the sum is 16.

The square root of 212132113 is about 14564.7558510261. The cubic root of 212132113 is about 596.3970308102.

Adding to 212132113 its reverse (311231212), we get a palindrome (523363325).

Subtracting 212132113 from its reverse (311231212), we obtain a palindrome (99099099).

The spelling of 212132113 in words is "two hundred twelve million, one hundred thirty-two thousand, one hundred thirteen".