11200111231 has 2 divisors, whose sum is σ = 11200111232. Its totient is φ = 11200111230.

The previous prime is 11200111201. The next prime is 11200111249. The reversal of 11200111231 is 13211100211.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13211100211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11200111231 - 2¹⁷ = 11199980159 is a prime.

It is a super-2 number, since 2×11200111231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11200111201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600055615 + 5600055616.

It is an arithmetic number, because the mean of its divisors is an integer number (5600055616).

Almost surely, 2^11200111231 is an apocalyptic number.

11200111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200111231 is an equidigital number, since it uses as much as digits as its factorization.

11200111231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11200111231 its reverse (13211100211), we get a palindrome (24411211442).

The spelling of 11200111231 in words is "eleven billion, two hundred million, one hundred eleven thousand, two hundred thirty-one".