212187208 has 16 divisors (see below), whose sum is σ = 398303280. Its totient is φ = 105973008.

The previous prime is 212187197. The next prime is 212187211. The reversal of 212187208 is 802781212.

It is a super-2 number, since 2×212187208² = 90046822477670528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212187208.

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, 7366 + ... + 21877.

It is an arithmetic number, because the mean of its divisors is an integer number (24893955).

Almost surely, 2^212187208 is an apocalyptic number.

It is an amenable number.

212187208 is a deficient number, since it is larger than the sum of its proper divisors (186116072).

212187208 is a wasteful number, since it uses less digits than its factorization.

212187208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30156 (or 30152 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 212187208 is about 14566.6471090639. The cubic root of 212187208 is about 596.4486584644.

The spelling of 212187208 in words is "two hundred twelve million, one hundred eighty-seven thousand, two hundred eight".