30120133123 has 4 divisors (see below), whose sum is σ = 30234658608. Its totient is φ = 30005607640.

The previous prime is 30120133081. The next prime is 30120133139. The reversal of 30120133123 is 32133102103.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30120133123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30120133123.

It is not an unprimeable number, because it can be changed into a prime (30120133223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57262348 + ... + 57262873.

It is an arithmetic number, because the mean of its divisors is an integer number (7558664652).

Almost surely, 2^30120133123 is an apocalyptic number.

30120133123 is a deficient number, since it is larger than the sum of its proper divisors (114525485).

30120133123 is a wasteful number, since it uses less digits than its factorization.

30120133123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114525484.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30120133123 its reverse (32133102103), we get a palindrome (62253235226).

The spelling of 30120133123 in words is "thirty billion, one hundred twenty million, one hundred thirty-three thousand, one hundred twenty-three".