111012311203181 has 2 divisors, whose sum is σ = 111012311203182. Its totient is φ = 111012311203180.

The previous prime is 111012311203127. The next prime is 111012311203217. The reversal of 111012311203181 is 181302113210111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62088805326025 + 48923505877156 = 7879645^2 + 6994534^2 .

It is an emirp because it is prime and its reverse (181302113210111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111012311203181 - 2³⁰ = 111011237461357 is a prime.

It is a super-2 number, since 2×111012311203181² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111012311203181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111012311293181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506155601590 + 55506155601591.

It is an arithmetic number, because the mean of its divisors is an integer number (55506155601591).

Almost surely, 2^{111012311203181} is an apocalyptic number.

It is an amenable number.

111012311203181 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012311203181 is an equidigital number, since it uses as much as digits as its factorization.

111012311203181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 26.

Adding to 111012311203181 its reverse (181302113210111), we get a palindrome (292314424413292).

The spelling of 111012311203181 in words is "one hundred eleven trillion, twelve billion, three hundred eleven million, two hundred three thousand, one hundred eighty-one".