102281396281 has 4 divisors (see below), whose sum is σ = 102287839732. Its totient is φ = 102274952832.

The previous prime is 102281396207. The next prime is 102281396293. The reversal of 102281396281 is 182693182201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48550156281 + 53731240000 = 220341^2 + 231800^2 .

It is a cyclic number.

It is not a de Polignac number, because 102281396281 - 2¹³ = 102281388089 is a prime.

It is a super-2 number, since 2×102281396281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102281696281) 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, 3197856 + ... + 3229681.

It is an arithmetic number, because the mean of its divisors is an integer number (25571959933).

Almost surely, 2^102281396281 is an apocalyptic number.

It is an amenable number.

102281396281 is a deficient number, since it is larger than the sum of its proper divisors (6443451).

102281396281 is an equidigital number, since it uses as much as digits as its factorization.

102281396281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443450.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 102281396281 in words is "one hundred two billion, two hundred eighty-one million, three hundred ninety-six thousand, two hundred eighty-one".