212126218 has 8 divisors (see below), whose sum is σ = 322217280. Its totient is φ = 104720460.

The previous prime is 212126197. The next prime is 212126261. The reversal of 212126218 is 812621212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212126192 and 212126201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671128 + ... + 671443.

It is an arithmetic number, because the mean of its divisors is an integer number (40277160).

Almost surely, 2^212126218 is an apocalyptic number.

212126218 is a deficient number, since it is larger than the sum of its proper divisors (110091062).

212126218 is a wasteful number, since it uses less digits than its factorization.

212126218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342652.

The product of its digits is 768, while the sum is 25.

The square root of 212126218 is about 14564.5534775358. The cubic root of 212126218 is about 596.3915062764.

The spelling of 212126218 in words is "two hundred twelve million, one hundred twenty-six thousand, two hundred eighteen".