2201202220181 has 2 divisors, whose sum is σ = 2201202220182. Its totient is φ = 2201202220180.

The previous prime is 2201202220159. The next prime is 2201202220219. The reversal of 2201202220181 is 1810222021022.

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., 1656497702500 + 544704517681 = 1287050^2 + 738041^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201202220181 - 2¹⁰ = 2201202219157 is a prime.

It is a super-3 number, since 3×2201202220181³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201202220081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100601110090 + 1100601110091.

It is an arithmetic number, because the mean of its divisors is an integer number (1100601110091).

Almost surely, 2^{2201202220181} is an apocalyptic number.

It is an amenable number.

2201202220181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201202220181 is an equidigital number, since it uses as much as digits as its factorization.

2201202220181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 2201202220181 in words is "two trillion, two hundred one billion, two hundred two million, two hundred twenty thousand, one hundred eighty-one".