212145518 has 8 divisors (see below), whose sum is σ = 342696648. Its totient is φ = 97913304.

The previous prime is 212145509. The next prime is 212145529. The reversal of 212145518 is 815541212.

212145518 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079696 + ... + 4079747.

It is an arithmetic number, because the mean of its divisors is an integer number (42837081).

Almost surely, 2^212145518 is an apocalyptic number.

212145518 is a deficient number, since it is larger than the sum of its proper divisors (130551130).

212145518 is a wasteful number, since it uses less digits than its factorization.

212145518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8159458.

The product of its digits is 3200, while the sum is 29.

The square root of 212145518 is about 14565.2160299805. The cubic root of 212145518 is about 596.4095930034.

The spelling of 212145518 in words is "two hundred twelve million, one hundred forty-five thousand, five hundred eighteen".