103003011021 has 4 divisors (see below), whose sum is σ = 137337348032. Its totient is φ = 68668674012.

The previous prime is 103003010989. The next prime is 103003011047. The reversal of 103003011021 is 120110300301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120110300301 = 3 ⋅40036766767.

It is not a de Polignac number, because 103003011021 - 2⁵ = 103003010989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103003010988 and 103003011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103003011061) 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, 17167168501 + ... + 17167168506.

It is an arithmetic number, because the mean of its divisors is an integer number (34334337008).

Almost surely, 2^103003011021 is an apocalyptic number.

It is an amenable number.

103003011021 is a deficient number, since it is larger than the sum of its proper divisors (34334337011).

103003011021 is an equidigital number, since it uses as much as digits as its factorization.

103003011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34334337010.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 103003011021 its reverse (120110300301), we get a palindrome (223113311322).

The spelling of 103003011021 in words is "one hundred three billion, three million, eleven thousand, twenty-one".