10201222081 has 2 divisors, whose sum is σ = 10201222082. Its totient is φ = 10201222080.

The previous prime is 10201222021. The next prime is 10201222121. The reversal of 10201222081 is 18022210201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7371939600 + 2829282481 = 85860^2 + 53191^2 .

It is a cyclic number.

It is not a de Polignac number, because 10201222081 - 2¹¹ = 10201220033 is a prime.

It is a super-2 number, since 2×10201222081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10201222001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100611040 + 5100611041.

It is an arithmetic number, because the mean of its divisors is an integer number (5100611041).

Almost surely, 2^10201222081 is an apocalyptic number.

It is an amenable number.

10201222081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201222081 is an equidigital number, since it uses as much as digits as its factorization.

10201222081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10201222081 its reverse (18022210201), we get a palindrome (28223432282).

The spelling of 10201222081 in words is "ten billion, two hundred one million, two hundred twenty-two thousand, eighty-one".