212445013 has 4 divisors (see below), whose sum is σ = 231758208. Its totient is φ = 193131820.

The previous prime is 212445011. The next prime is 212445031. The reversal of 212445013 is 310544212.

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 a cyclic number.

It is not a de Polignac number, because 212445013 - 2¹ = 212445011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212445011) 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, 9656581 + ... + 9656602.

It is an arithmetic number, because the mean of its divisors is an integer number (57939552).

Almost surely, 2^212445013 is an apocalyptic number.

It is an amenable number.

212445013 is a deficient number, since it is larger than the sum of its proper divisors (19313195).

212445013 is a wasteful number, since it uses less digits than its factorization.

212445013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19313194.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 212445013 is about 14575.4935765483. The cubic root of 212445013 is about 596.6901201036.

Adding to 212445013 its reverse (310544212), we get a palindrome (522989225).

The spelling of 212445013 in words is "two hundred twelve million, four hundred forty-five thousand, thirteen".