212173370 has 8 divisors (see below), whose sum is σ = 381912084. Its totient is φ = 84869344.

The previous prime is 212173349. The next prime is 212173373. The reversal of 212173370 is 73371212.

It can be written as a sum of positive squares in 2 ways, for example, as 182547121 + 29626249 = 13511^2 + 5443^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212173373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10608659 + ... + 10608678.

Almost surely, 2^212173370 is an apocalyptic number.

212173370 is a deficient number, since it is larger than the sum of its proper divisors (169738714).

212173370 is a wasteful number, since it uses less digits than its factorization.

212173370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21217344.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 212173370 is about 14566.1721121233. The cubic root of 212173370 is about 596.4356921849.

The spelling of 212173370 in words is "two hundred twelve million, one hundred seventy-three thousand, three hundred seventy".