211000172 has 18 divisors (see below), whose sum is σ = 382428228. Its totient is φ = 101860528.

The previous prime is 211000151. The next prime is 211000177. The reversal of 211000172 is 271000112.

211000172 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

211000172 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (211000177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27998 + ... + 34725.

Almost surely, 2^211000172 is an apocalyptic number.

It is an amenable number.

211000172 is a deficient number, since it is larger than the sum of its proper divisors (171428056).

211000172 is a wasteful number, since it uses less digits than its factorization.

211000172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62785 (or 62754 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 211000172 is about 14525.8449668169. The cubic root of 211000172 is about 595.3343430792.

Adding to 211000172 its reverse (271000112), we get a palindrome (482000284).

The spelling of 211000172 in words is "two hundred eleven million, one hundred seventy-two", and thus it is an aban number.