212052005 has 16 divisors (see below), whose sum is σ = 277890048. Its totient is φ = 154056000.

The previous prime is 212051981. The next prime is 212052013. The reversal of 212052005 is 500250212.

It is a de Polignac number, because none of the positive numbers 2^k-212052005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79595 + ... + 82215.

It is an arithmetic number, because the mean of its divisors is an integer number (17368128).

Almost surely, 2^212052005 is an apocalyptic number.

It is an amenable number.

212052005 is a deficient number, since it is larger than the sum of its proper divisors (65838043).

212052005 is a wasteful number, since it uses less digits than its factorization.

212052005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 212052005 is about 14562.0055280858. The cubic root of 212052005 is about 596.3219483723.

The spelling of 212052005 in words is "two hundred twelve million, fifty-two thousand, five".