30030203121 has 4 divisors (see below), whose sum is σ = 40040270832. Its totient is φ = 20020135412.

The previous prime is 30030203117. The next prime is 30030203123. The reversal of 30030203121 is 12130203003.

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.

It is a cyclic number.

It is not a de Polignac number, because 30030203121 - 2² = 30030203117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30030203121.

It is not an unprimeable number, because it can be changed into a prime (30030203123) 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, 5005033851 + ... + 5005033856.

It is an arithmetic number, because the mean of its divisors is an integer number (10010067708).

Almost surely, 2^30030203121 is an apocalyptic number.

It is an amenable number.

30030203121 is a deficient number, since it is larger than the sum of its proper divisors (10010067711).

30030203121 is a wasteful number, since it uses less digits than its factorization.

30030203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010067710.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30030203121 its reverse (12130203003), we get a palindrome (42160406124).

The spelling of 30030203121 in words is "thirty billion, thirty million, two hundred three thousand, one hundred twenty-one".