101412281 has 4 divisors (see below), whose sum is σ = 101758692. Its totient is φ = 101065872.

The previous prime is 101412263. The next prime is 101412287. The reversal of 101412281 is 182214101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 182214101 = 109 ⋅1671689.

It can be written as a sum of positive squares in 2 ways, for example, as 90250000 + 11162281 = 9500^2 + 3341^2 .

It is a cyclic number.

It is not a de Polignac number, because 101412281 - 2²² = 97217977 is a prime.

It is a super-2 number, since 2×101412281² = 20568901475245922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101412287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172766 + ... + 173351.

It is an arithmetic number, because the mean of its divisors is an integer number (25439673).

Almost surely, 2^101412281 is an apocalyptic number.

It is an amenable number.

101412281 is a deficient number, since it is larger than the sum of its proper divisors (346411).

101412281 is an equidigital number, since it uses as much as digits as its factorization.

101412281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346410.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 101412281 is about 10070.3664779391. The cubic root of 101412281 is about 466.3337527528. Note that the first 3 decimals are identical.

Adding to 101412281 its reverse (182214101), we get a palindrome (283626382).

The spelling of 101412281 in words is "one hundred one million, four hundred twelve thousand, two hundred eighty-one".