10222021020181 has 2 divisors, whose sum is σ = 10222021020182. Its totient is φ = 10222021020180.

The previous prime is 10222021020179. The next prime is 10222021020203. The reversal of 10222021020181 is 18102012022201.

It is an a-pointer prime, because the next prime (10222021020203) can be obtained adding 10222021020181 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5389520113156 + 4832500907025 = 2321534^2 + 2198295^2 .

It is a cyclic number.

It is not a de Polignac number, because 10222021020181 - 2¹ = 10222021020179 is a prime.

It is a super-2 number, since 2×10222021020181² (a number of 27 digits) contains 22 as substring.

Together with 10222021020179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10222021020151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111010510090 + 5111010510091.

It is an arithmetic number, because the mean of its divisors is an integer number (5111010510091).

Almost surely, 2^{10222021020181} is an apocalyptic number.

It is an amenable number.

10222021020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10222021020181 is an equidigital number, since it uses as much as digits as its factorization.

10222021020181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 10222021020181 its reverse (18102012022201), we get a palindrome (28324033042382).

The spelling of 10222021020181 in words is "ten trillion, two hundred twenty-two billion, twenty-one million, twenty thousand, one hundred eighty-one".