10112211181 has 2 divisors, whose sum is σ = 10112211182. Its totient is φ = 10112211180.

The previous prime is 10112211169. The next prime is 10112211209. The reversal of 10112211181 is 18111221101.

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., 9834688900 + 277522281 = 99170^2 + 16659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10112211181 is a prime.

It is a super-2 number, since 2×10112211181² (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 (10112211101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5056105590 + 5056105591.

It is an arithmetic number, because the mean of its divisors is an integer number (5056105591).

Almost surely, 2^10112211181 is an apocalyptic number.

It is an amenable number.

10112211181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10112211181 is an equidigital number, since it uses as much as digits as its factorization.

10112211181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 10112211181 its reverse (18111221101), we get a palindrome (28223432282).

The spelling of 10112211181 in words is "ten billion, one hundred twelve million, two hundred eleven thousand, one hundred eighty-one".