2201011101181 has 2 divisors, whose sum is σ = 2201011101182. Its totient is φ = 2201011101180.

The previous prime is 2201011101173. The next prime is 2201011101209. The reversal of 2201011101181 is 1811011101022.

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., 1287249084900 + 913762016281 = 1134570^2 + 955909^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201011101181 - 2³ = 2201011101173 is a prime.

It is a super-2 number, since 2×2201011101181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201011101161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100505550590 + 1100505550591.

It is an arithmetic number, because the mean of its divisors is an integer number (1100505550591).

Almost surely, 2^{2201011101181} is an apocalyptic number.

It is an amenable number.

2201011101181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201011101181 is an equidigital number, since it uses as much as digits as its factorization.

2201011101181 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.

The spelling of 2201011101181 in words is "two trillion, two hundred one billion, eleven million, one hundred one thousand, one hundred eighty-one".