1001222010281 has 2 divisors, whose sum is σ = 1001222010282. Its totient is φ = 1001222010280.

The previous prime is 1001222010277. The next prime is 1001222010287. The reversal of 1001222010281 is 1820102221001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998730403225 + 2491607056 = 999365^2 + 49916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001222010281 - 2² = 1001222010277 is a prime.

It is a super-2 number, since 2×1001222010281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1001222010287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500611005140 + 500611005141.

It is an arithmetic number, because the mean of its divisors is an integer number (500611005141).

Almost surely, 2^{1001222010281} is an apocalyptic number.

It is an amenable number.

1001222010281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001222010281 is an equidigital number, since it uses as much as digits as its factorization.

1001222010281 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 20.

Adding to 1001222010281 its reverse (1820102221001), we get a palindrome (2821324231282).

The spelling of 1001222010281 in words is "one trillion, one billion, two hundred twenty-two million, ten thousand, two hundred eighty-one".