11897211 has 16 divisors (see below), whose sum is σ = 17239040. Its totient is φ = 7270560.

The previous prime is 11897209. The next prime is 11897219. The reversal of 11897211 is 11279811.

It is not a de Polignac number, because 11897211 - 2¹ = 11897209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11897219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (1077440).

Almost surely, 2^11897211 is an apocalyptic number.

11897211 is a deficient number, since it is larger than the sum of its proper divisors (5341829).

11897211 is a wasteful number, since it uses less digits than its factorization.

11897211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786.

The product of its digits is 1008, while the sum is 30.

The square root of 11897211 is about 3449.2333930890. The cubic root of 11897211 is about 228.2872840638.

The spelling of 11897211 in words is "eleven million, eight hundred ninety-seven thousand, two hundred eleven".