212001005 has 8 divisors (see below), whose sum is σ = 265462272. Its totient is φ = 162226768.

The previous prime is 212001001. The next prime is 212001017. The reversal of 212001005 is 500100212.

212001005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212001005 - 2² = 212001001 is a prime.

It is a super-2 number, since 2×212001005² = 89888852242020050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921629 + ... + 921858.

It is an arithmetic number, because the mean of its divisors is an integer number (33182784).

Almost surely, 2^212001005 is an apocalyptic number.

It is an amenable number.

212001005 is a deficient number, since it is larger than the sum of its proper divisors (53461267).

212001005 is a wasteful number, since it uses less digits than its factorization.

212001005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843515.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 212001005 is about 14560.2542903618. The cubic root of 212001005 is about 596.2741379970.

Adding to 212001005 its reverse (500100212), we get a palindrome (712101217).

The spelling of 212001005 in words is "two hundred twelve million, one thousand, five".