30033121123 has 4 divisors (see below), whose sum is σ = 30113639248. Its totient is φ = 29952603000.

The previous prime is 30033121117. The next prime is 30033121127. The reversal of 30033121123 is 32112133003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32112133003 = 157 ⋅204535879.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30033121123 is a prime.

It is a super-2 number, since 2×30033121123² (a number of 22 digits) contains 22 as substring.

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 30033121123.

It is not an unprimeable number, because it can be changed into a prime (30033121127) 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, 40258503 + ... + 40259248.

It is an arithmetic number, because the mean of its divisors is an integer number (7528409812).

Almost surely, 2^30033121123 is an apocalyptic number.

30033121123 is a deficient number, since it is larger than the sum of its proper divisors (80518125).

30033121123 is an equidigital number, since it uses as much as digits as its factorization.

30033121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80518124.

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

Adding to 30033121123 its reverse (32112133003), we get a palindrome (62145254126).

The spelling of 30033121123 in words is "thirty billion, thirty-three million, one hundred twenty-one thousand, one hundred twenty-three".