212701005 has 64 divisors (see below), whose sum is σ = 422231040. Its totient is φ = 100699200.

The previous prime is 212701003. The next prime is 212701009. The reversal of 212701005 is 500107212.

It is not a de Polignac number, because 212701005 - 2¹ = 212701003 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212701001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62190 + ... + 65520.

It is an arithmetic number, because the mean of its divisors is an integer number (6597360).

Almost surely, 2^212701005 is an apocalyptic number.

It is an amenable number.

212701005 is a deficient number, since it is larger than the sum of its proper divisors (209530035).

212701005 is a wasteful number, since it uses less digits than its factorization.

212701005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399 (or 3393 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 212701005 is about 14584.2725221384. The cubic root of 212701005 is about 596.9296904649.

Adding to 212701005 its reverse (500107212), we get a palindrome (712808217).

The spelling of 212701005 in words is "two hundred twelve million, seven hundred one thousand, five".