30121003103 has 4 divisors (see below), whose sum is σ = 30121677168. Its totient is φ = 30120329040.

The previous prime is 30121003061. The next prime is 30121003147. The reversal of 30121003103 is 30130012103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30121003103 - 2¹⁴ = 30120986719 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 (30121003163) 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, 264851 + ... + 361092.

It is an arithmetic number, because the mean of its divisors is an integer number (7530419292).

Almost surely, 2^30121003103 is an apocalyptic number.

30121003103 is a deficient number, since it is larger than the sum of its proper divisors (674065).

30121003103 is an equidigital number, since it uses as much as digits as its factorization.

30121003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674064.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 30121003103 its reverse (30130012103), we get a palindrome (60251015206).

The spelling of 30121003103 in words is "thirty billion, one hundred twenty-one million, three thousand, one hundred three".