11122111002181 has 2 divisors, whose sum is σ = 11122111002182. Its totient is φ = 11122111002180.

The previous prime is 11122111002137. The next prime is 11122111002217. The reversal of 11122111002181 is 18120011122111.

11122111002181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7927794821956 + 3194316180225 = 2815634^2 + 1787265^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122111002181 - 2¹³ = 11122110993989 is a prime.

It is a super-2 number, since 2×11122111002181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122111002881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561055501090 + 5561055501091.

It is an arithmetic number, because the mean of its divisors is an integer number (5561055501091).

Almost surely, 2^{11122111002181} is an apocalyptic number.

It is an amenable number.

11122111002181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122111002181 is an equidigital number, since it uses as much as digits as its factorization.

11122111002181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 22.

Adding to 11122111002181 its reverse (18120011122111), we get a palindrome (29242122124292).

The spelling of 11122111002181 in words is "eleven trillion, one hundred twenty-two billion, one hundred eleven million, two thousand, one hundred eighty-one".