671121211 has 8 divisors (see below), whose sum is σ = 707857920. Its totient is φ = 634525992.

The previous prime is 671121203. The next prime is 671121221. The reversal of 671121211 is 112121176.

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

It is a cyclic number.

It is not a de Polignac number, because 671121211 - 2³ = 671121203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671121221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25555 + ... + 44668.

It is an arithmetic number, because the mean of its divisors is an integer number (88482240).

Almost surely, 2^671121211 is an apocalyptic number.

671121211 is a deficient number, since it is larger than the sum of its proper divisors (36736709).

671121211 is a wasteful number, since it uses less digits than its factorization.

671121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70745.

The product of its digits is 168, while the sum is 22.

The square root of 671121211 is about 25906.0072377045. The cubic root of 671121211 is about 875.5218485996.

Adding to 671121211 its reverse (112121176), we get a palindrome (783242387).

The spelling of 671121211 in words is "six hundred seventy-one million, one hundred twenty-one thousand, two hundred eleven".