102003313112021 has 8 divisors (see below), whose sum is σ = 102028056427224. Its totient is φ = 101978570453760.

The previous prime is 102003313112009. The next prime is 102003313112087. The reversal of 102003313112021 is 120211313300201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22785213904996 + 79218099207025 = 4773386^2 + 8900455^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102003313112021 - 2¹⁴ = 102003313095637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102003313111984 and 102003313112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102003313112821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471655505 + ... + 471871721.

It is an arithmetic number, because the mean of its divisors is an integer number (12753507053403).

Almost surely, 2^{102003313112021} is an apocalyptic number.

It is an amenable number.

102003313112021 is a deficient number, since it is larger than the sum of its proper divisors (24743315203).

102003313112021 is a wasteful number, since it uses less digits than its factorization.

102003313112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328471.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 102003313112021 its reverse (120211313300201), we get a palindrome (222214626412222).

The spelling of 102003313112021 in words is "one hundred two trillion, three billion, three hundred thirteen million, one hundred twelve thousand, twenty-one".