2210111220181 has 2 divisors, whose sum is σ = 2210111220182. Its totient is φ = 2210111220180.

The previous prime is 2210111220139. The next prime is 2210111220193. The reversal of 2210111220181 is 1810221110122.

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., 2138292044100 + 71819176081 = 1462290^2 + 267991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2210111220181 is a prime.

It is a super-2 number, since 2×2210111220181² (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 (2210111220481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105055610090 + 1105055610091.

It is an arithmetic number, because the mean of its divisors is an integer number (1105055610091).

Almost surely, 2^{2210111220181} is an apocalyptic number.

It is an amenable number.

2210111220181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210111220181 is an equidigital number, since it uses as much as digits as its factorization.

2210111220181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 22.

The spelling of 2210111220181 in words is "two trillion, two hundred ten billion, one hundred eleven million, two hundred twenty thousand, one hundred eighty-one".