11211100320231 has 36 divisors (see below), whose sum is σ = 19020589537872. Its totient is φ = 6344145509184.

The previous prime is 11211100320227. The next prime is 11211100320253. The reversal of 11211100320231 is 13202300111211.

11211100320231 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 110 + 0 + 320 + 231 = 666.

It is not a de Polignac number, because 11211100320231 - 2² = 11211100320227 is a prime.

It is a super-2 number, since 2×11211100320231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211100420231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 123362326 + ... + 123453171.

Almost surely, 2^{11211100320231} is an apocalyptic number.

11211100320231 is a deficient number, since it is larger than the sum of its proper divisors (7809489217641).

11211100320231 is a wasteful number, since it uses less digits than its factorization.

11211100320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246815620 (or 246815610 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11211100320231 its reverse (13202300111211), we get a palindrome (24413400431442).

The spelling of 11211100320231 in words is "eleven trillion, two hundred eleven billion, one hundred million, three hundred twenty thousand, two hundred thirty-one".