11279897211 has 48 divisors (see below), whose sum is σ = 17098905600. Its totient is φ = 6605364480.

The previous prime is 11279897207. The next prime is 11279897221.

11279897211 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11279897211 - 2² = 11279897207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11279897201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1343635 + ... + 1352003.

It is an arithmetic number, because the mean of its divisors is an integer number (356227200).

Almost surely, 2^11279897211 is an apocalyptic number.

11279897211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11279897211 is a deficient number, since it is larger than the sum of its proper divisors (5819008389).

11279897211 is a wasteful number, since it uses less digits than its factorization.

11279897211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520 (or 8509 counting only the distinct ones).

The product of its digits is 127008, while the sum is 48.

The spelling of 11279897211 in words is "eleven billion, two hundred seventy-nine million, eight hundred ninety-seven thousand, two hundred eleven".