212250005 has 16 divisors (see below), whose sum is σ = 278178624. Its totient is φ = 154183680.

The previous prime is 212249993. The next prime is 212250023. The reversal of 212250005 is 500052212.

It is not a de Polignac number, because 212250005 - 2⁶ = 212249941 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, 61742 + ... + 65088.

It is an arithmetic number, because the mean of its divisors is an integer number (17386164).

Almost surely, 2^212250005 is an apocalyptic number.

It is an amenable number.

212250005 is a deficient number, since it is larger than the sum of its proper divisors (65928619).

212250005 is a wasteful number, since it uses less digits than its factorization.

212250005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516.

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

The square root of 212250005 is about 14568.8024559330. The cubic root of 212250005 is about 596.5074925044.

The spelling of 212250005 in words is "two hundred twelve million, two hundred fifty thousand, five".