111012010210181 has 2 divisors, whose sum is σ = 111012010210182. Its totient is φ = 111012010210180.

The previous prime is 111012010210093. The next prime is 111012010210183. The reversal of 111012010210181 is 181012010210111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97212382613956 + 13799627596225 = 9859634^2 + 3714785^2 .

It is a cyclic number.

It is not a de Polignac number, because 111012010210181 - 2¹⁰ = 111012010209157 is a prime.

It is a super-2 number, since 2×111012010210181² (a number of 29 digits) contains 22 as substring.

Together with 111012010210183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111012010210183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506005105090 + 55506005105091.

It is an arithmetic number, because the mean of its divisors is an integer number (55506005105091).

Almost surely, 2^{111012010210181} is an apocalyptic number.

It is an amenable number.

111012010210181 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012010210181 is an equidigital number, since it uses as much as digits as its factorization.

111012010210181 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 20.

Adding to 111012010210181 its reverse (181012010210111), we get a palindrome (292024020420292).

The spelling of 111012010210181 in words is "one hundred eleven trillion, twelve billion, ten million, two hundred ten thousand, one hundred eighty-one".