212158005 has 8 divisors (see below), whose sum is σ = 339452832. Its totient is φ = 113150928.

The previous prime is 212157989. The next prime is 212158007. The reversal of 212158005 is 500851212.

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

It is not a de Polignac number, because 212158005 - 2⁴ = 212157989 is a prime.

It is a super-2 number, since 2×212158005² = 90022038171160050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212158007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7071919 + ... + 7071948.

It is an arithmetic number, because the mean of its divisors is an integer number (42431604).

Almost surely, 2^212158005 is an apocalyptic number.

It is an amenable number.

212158005 is a deficient number, since it is larger than the sum of its proper divisors (127294827).

212158005 is a wasteful number, since it uses less digits than its factorization.

212158005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143875.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 212158005 is about 14565.6446819219. The cubic root of 212158005 is about 596.4212944376.

The spelling of 212158005 in words is "two hundred twelve million, one hundred fifty-eight thousand, five".