102821118383 has 4 divisors (see below), whose sum is σ = 104229626928. Its totient is φ = 101412609840.

The previous prime is 102821118373. The next prime is 102821118397. The reversal of 102821118383 is 383811128201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383811128201 = 151 ⋅2541795551.

It is a cyclic number.

It is not a de Polignac number, because 102821118383 - 2¹² = 102821114287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102821118373) 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, 704254163 + ... + 704254308.

It is an arithmetic number, because the mean of its divisors is an integer number (26057406732).

Almost surely, 2^102821118383 is an apocalyptic number.

102821118383 is a deficient number, since it is larger than the sum of its proper divisors (1408508545).

102821118383 is an equidigital number, since it uses as much as digits as its factorization.

102821118383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408508544.

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 102821118383 in words is "one hundred two billion, eight hundred twenty-one million, one hundred eighteen thousand, three hundred eighty-three".