11200231181 has 2 divisors, whose sum is σ = 11200231182. Its totient is φ = 11200231180.

The previous prime is 11200231171. The next prime is 11200231243. The reversal of 11200231181 is 18113200211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11140802500 + 59428681 = 105550^2 + 7709^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200231181 - 2¹⁴ = 11200214797 is a prime.

It is a super-2 number, since 2×11200231181² (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 (11200231121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600115590 + 5600115591.

It is an arithmetic number, because the mean of its divisors is an integer number (5600115591).

Almost surely, 2^11200231181 is an apocalyptic number.

It is an amenable number.

11200231181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200231181 is an equidigital number, since it uses as much as digits as its factorization.

11200231181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 11200231181 its reverse (18113200211), we get a palindrome (29313431392).

The spelling of 11200231181 in words is "eleven billion, two hundred million, two hundred thirty-one thousand, one hundred eighty-one".