212232013 has 4 divisors (see below), whose sum is σ = 242550880. Its totient is φ = 181913148.

The previous prime is 212231977. The next prime is 212232049. The reversal of 212232013 is 310232212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (212231977) and next prime (212232049).

It is a cyclic number.

It is not a de Polignac number, because 212232013 - 2²¹ = 210134861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212232073) 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, 15159423 + ... + 15159436.

It is an arithmetic number, because the mean of its divisors is an integer number (60637720).

Almost surely, 2^212232013 is an apocalyptic number.

It is an amenable number.

212232013 is a deficient number, since it is larger than the sum of its proper divisors (30318867).

212232013 is an equidigital number, since it uses as much as digits as its factorization.

212232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30318866.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 212232013 is about 14568.1849590126. The cubic root of 212232013 is about 596.4906371203.

Adding to 212232013 its reverse (310232212), we get a palindrome (522464225).

The spelling of 212232013 in words is "two hundred twelve million, two hundred thirty-two thousand, thirteen".