10221210010181 has 2 divisors, whose sum is σ = 10221210010182. Its totient is φ = 10221210010180.

The previous prime is 10221210010133. The next prime is 10221210010337. The reversal of 10221210010181 is 18101001212201.

It is a happy number.

10221210010181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5558348488225 + 4662861521956 = 2357615^2 + 2159366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221210010181 is a prime.

It is a super-2 number, since 2×10221210010181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221210016181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110605005090 + 5110605005091.

It is an arithmetic number, because the mean of its divisors is an integer number (5110605005091).

Almost surely, 2^{10221210010181} is an apocalyptic number.

It is an amenable number.

10221210010181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221210010181 is an equidigital number, since it uses as much as digits as its factorization.

10221210010181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 10221210010181 its reverse (18101001212201), we get a palindrome (28322211222382).

The spelling of 10221210010181 in words is "ten trillion, two hundred twenty-one billion, two hundred ten million, ten thousand, one hundred eighty-one".