1012011222281 has 2 divisors, whose sum is σ = 1012011222282. Its totient is φ = 1012011222280.

The previous prime is 1012011222197. The next prime is 1012011222289. The reversal of 1012011222281 is 1822221102101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749133525625 + 262877696656 = 865525^2 + 512716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012011222281 is a prime.

It is a super-2 number, since 2×1012011222281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012011222289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506005611140 + 506005611141.

It is an arithmetic number, because the mean of its divisors is an integer number (506005611141).

Almost surely, 2^{1012011222281} is an apocalyptic number.

It is an amenable number.

1012011222281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012011222281 is an equidigital number, since it uses as much as digits as its factorization.

1012011222281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 23.

Adding to 1012011222281 its reverse (1822221102101), we get a palindrome (2834232324382).

The spelling of 1012011222281 in words is "one trillion, twelve billion, eleven million, two hundred twenty-two thousand, two hundred eighty-one".