102111284281 has 4 divisors (see below), whose sum is σ = 102115078912. Its totient is φ = 102107489652.

The previous prime is 102111284279. The next prime is 102111284291. The reversal of 102111284281 is 182482111201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102111284281 - 2¹ = 102111284279 is a prime.

It is a super-2 number, since 2×102111284281² (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 (102111284221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1856661 + ... + 1910866.

It is an arithmetic number, because the mean of its divisors is an integer number (25528769728).

Almost surely, 2^102111284281 is an apocalyptic number.

It is an amenable number.

102111284281 is a deficient number, since it is larger than the sum of its proper divisors (3794631).

102111284281 is an equidigital number, since it uses as much as digits as its factorization.

102111284281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3794630.

The product of its (nonzero) digits is 2048, while the sum is 31.

Adding to 102111284281 its reverse (182482111201), we get a palindrome (284593395482).

The spelling of 102111284281 in words is "one hundred two billion, one hundred eleven million, two hundred eighty-four thousand, two hundred eighty-one".