1020101281 has 2 divisors, whose sum is σ = 1020101282. Its totient is φ = 1020101280.

The previous prime is 1020101273. The next prime is 1020101293. The reversal of 1020101281 is 1821010201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681210000 + 338891281 = 26100^2 + 18409^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020101281 - 2³ = 1020101273 is a prime.

It is a super-2 number, since 2×1020101281² = 2081213246995681922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020101981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510050640 + 510050641.

It is an arithmetic number, because the mean of its divisors is an integer number (510050641).

Almost surely, 2^1020101281 is an apocalyptic number.

It is an amenable number.

1020101281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020101281 is an equidigital number, since it uses as much as digits as its factorization.

1020101281 is an evil number, because the sum of its binary digits is even.

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

The square root of 1020101281 is about 31939.0244215442. The cubic root of 1020101281 is about 1006.6560260243.

Adding to 1020101281 its reverse (1821010201), we get a palindrome (2841111482).

The spelling of 1020101281 in words is "one billion, twenty million, one hundred one thousand, two hundred eighty-one".