30030121123 has 4 divisors (see below), whose sum is σ = 30046122000. Its totient is φ = 30014120248.

The previous prime is 30030121117. The next prime is 30030121153. The reversal of 30030121123 is 32112103003.

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 30030121123 - 2²⁹ = 29493250211 is a prime.

It is a super-2 number, since 2×30030121123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30030121097 and 30030121106.

It is not an unprimeable number, because it can be changed into a prime (30030121153) 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, 7997623 + ... + 8001376.

It is an arithmetic number, because the mean of its divisors is an integer number (7511530500).

Almost surely, 2^30030121123 is an apocalyptic number.

30030121123 is a deficient number, since it is larger than the sum of its proper divisors (16000877).

30030121123 is a wasteful number, since it uses less digits than its factorization.

30030121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16000876.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30030121123 its reverse (32112103003), we get a palindrome (62142224126).

The spelling of 30030121123 in words is "thirty billion, thirty million, one hundred twenty-one thousand, one hundred twenty-three".