10101222181 has 2 divisors, whose sum is σ = 10101222182. Its totient is φ = 10101222180.

The previous prime is 10101222151. The next prime is 10101222221. The reversal of 10101222181 is 18122210101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7919398081 + 2181824100 = 88991^2 + 46710^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101222181 - 2¹³ = 10101213989 is a prime.

It is a super-2 number, since 2×10101222181² (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 (10101222101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050611090 + 5050611091.

It is an arithmetic number, because the mean of its divisors is an integer number (5050611091).

Almost surely, 2^10101222181 is an apocalyptic number.

It is an amenable number.

10101222181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101222181 is an equidigital number, since it uses as much as digits as its factorization.

10101222181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10101222181 its reverse (18122210101), we get a palindrome (28223432282).

The spelling of 10101222181 in words is "ten billion, one hundred one million, two hundred twenty-two thousand, one hundred eighty-one".