103030303021 has 4 divisors (see below), whose sum is σ = 104719324444. Its totient is φ = 101341281600.

The previous prime is 103030303007. The next prime is 103030303063. The reversal of 103030303021 is 120303030301.

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 8034433225 + 94995869796 = 89635^2 + 308214^2 .

It is a cyclic number.

It is not a de Polignac number, because 103030303021 - 2¹⁷ = 103030171949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103030302986 and 103030303004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103030303121) 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, 844510620 + ... + 844510741.

It is an arithmetic number, because the mean of its divisors is an integer number (26179831111).

Almost surely, 2^103030303021 is an apocalyptic number.

It is an amenable number.

103030303021 is a deficient number, since it is larger than the sum of its proper divisors (1689021423).

103030303021 is an equidigital number, since it uses as much as digits as its factorization.

103030303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689021422.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 103030303021 its reverse (120303030301), we get a palindrome (223333333322).

The spelling of 103030303021 in words is "one hundred three billion, thirty million, three hundred three thousand, twenty-one".