10221031202281 has 2 divisors, whose sum is σ = 10221031202282. Its totient is φ = 10221031202280.

The previous prime is 10221031202273. The next prime is 10221031202297. The reversal of 10221031202281 is 18220213012201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8699644634256 + 1521386568025 = 2949516^2 + 1233445^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221031202281 - 2³ = 10221031202273 is a prime.

It is a super-2 number, since 2×10221031202281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10221031202381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110515601140 + 5110515601141.

It is an arithmetic number, because the mean of its divisors is an integer number (5110515601141).

Almost surely, 2^{10221031202281} is an apocalyptic number.

It is an amenable number.

10221031202281 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221031202281 is an equidigital number, since it uses as much as digits as its factorization.

10221031202281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 10221031202281 its reverse (18220213012201), we get a palindrome (28441244214482).

The spelling of 10221031202281 in words is "ten trillion, two hundred twenty-one billion, thirty-one million, two hundred two thousand, two hundred eighty-one".