30102111123 has 16 divisors (see below), whose sum is σ = 48568112640. Its totient is φ = 16189370496.

The previous prime is 30102111073. The next prime is 30102111163. The reversal of 30102111123 is 32111120103.

It is a happy number.

It is not a de Polignac number, because 30102111123 - 2¹⁰ = 30102110099 is a prime.

It is a super-2 number, since 2×30102111123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30102111163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42159463 + ... + 42160176.

It is an arithmetic number, because the mean of its divisors is an integer number (3035507040).

Almost surely, 2^30102111123 is an apocalyptic number.

30102111123 is a deficient number, since it is larger than the sum of its proper divisors (18466001517).

30102111123 is a wasteful number, since it uses less digits than its factorization.

30102111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84319666.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 30102111123 its reverse (32111120103), we get a palindrome (62213231226).

The spelling of 30102111123 in words is "thirty billion, one hundred two million, one hundred eleven thousand, one hundred twenty-three".