1012100281 has 2 divisors, whose sum is σ = 1012100282. Its totient is φ = 1012100280.

The previous prime is 1012100279. The next prime is 1012100291. The reversal of 1012100281 is 1820012101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 841928256 + 170172025 = 29016^2 + 13045^2 .

It is an emirp because it is prime and its reverse (1820012101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012100281 - 2¹ = 1012100279 is a prime.

It is a super-2 number, since 2×1012100281² = 2048693957600557922, which contains 22 as substring.

Together with 1012100279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1012100291) 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, 506050140 + 506050141.

It is an arithmetic number, because the mean of its divisors is an integer number (506050141).

Almost surely, 2^1012100281 is an apocalyptic number.

It is an amenable number.

1012100281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012100281 is an equidigital number, since it uses as much as digits as its factorization.

1012100281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1012100281 is about 31813.5235552430. The cubic root of 1012100281 is about 1004.0172669554.

Adding to 1012100281 its reverse (1820012101), we get a palindrome (2832112382).

The spelling of 1012100281 in words is "one billion, twelve million, one hundred thousand, two hundred eighty-one".