11002132181 has 2 divisors, whose sum is σ = 11002132182. Its totient is φ = 11002132180.

The previous prime is 11002132123. The next prime is 11002132189. The reversal of 11002132181 is 18123120011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7650301156 + 3351831025 = 87466^2 + 57895^2 .

It is a cyclic number.

It is not a de Polignac number, because 11002132181 - 2¹⁸ = 11001870037 is a prime.

It is a super-2 number, since 2×11002132181² (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 (11002132189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501066090 + 5501066091.

It is an arithmetic number, because the mean of its divisors is an integer number (5501066091).

Almost surely, 2^11002132181 is an apocalyptic number.

It is an amenable number.

11002132181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11002132181 is an equidigital number, since it uses as much as digits as its factorization.

11002132181 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 11002132181 its reverse (18123120011), we get a palindrome (29125252192).

The spelling of 11002132181 in words is "eleven billion, two million, one hundred thirty-two thousand, one hundred eighty-one".