211085919 has 20 divisors (see below), whose sum is σ = 343993320. Its totient is φ = 127930320.

The previous prime is 211085891. The next prime is 211085947. The reversal of 211085919 is 919580112.

It is an interprime number because it is at equal distance from previous prime (211085891) and next prime (211085947).

It is not a de Polignac number, because 211085919 - 2¹² = 211081823 is a prime.

It is a super-2 number, since 2×211085919² = 89114530400149122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211085219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 117564 + ... + 119345.

It is an arithmetic number, because the mean of its divisors is an integer number (17199666).

Almost surely, 2^211085919 is an apocalyptic number.

211085919 is a deficient number, since it is larger than the sum of its proper divisors (132907401).

211085919 is a wasteful number, since it uses less digits than its factorization.

211085919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236932 (or 236923 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 211085919 is about 14528.7961992727. The cubic root of 211085919 is about 595.4149768531.

The spelling of 211085919 in words is "two hundred eleven million, eighty-five thousand, nine hundred nineteen".