212013047 has 4 divisors (see below), whose sum is σ = 212226696. Its totient is φ = 211799400.

The previous prime is 212013017. The next prime is 212013059. The reversal of 212013047 is 740310212.

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

It is a cyclic number.

It is not a de Polignac number, because 212013047 - 2¹⁴ = 211996663 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 (212013007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105329 + ... + 107322.

It is an arithmetic number, because the mean of its divisors is an integer number (53056674).

Almost surely, 2^212013047 is an apocalyptic number.

212013047 is a deficient number, since it is larger than the sum of its proper divisors (213649).

212013047 is an equidigital number, since it uses as much as digits as its factorization.

212013047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213648.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 212013047 is about 14560.6678074874. The cubic root of 212013047 is about 596.2854275618.

Adding to 212013047 its reverse (740310212), we get a palindrome (952323259).

The spelling of 212013047 in words is "two hundred twelve million, thirteen thousand, forty-seven".