30123122123 has 2 divisors, whose sum is σ = 30123122124. Its totient is φ = 30123122122.

The previous prime is 30123122119. The next prime is 30123122131. The reversal of 30123122123 is 32122132103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30123122123 - 2² = 30123122119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30123122095 and 30123122104.

It is not a weakly prime, because it can be changed into another prime (30123122143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061561061 + 15061561062.

It is an arithmetic number, because the mean of its divisors is an integer number (15061561062).

Almost surely, 2^30123122123 is an apocalyptic number.

30123122123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123122123 is an equidigital number, since it uses as much as digits as its factorization.

30123122123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30123122123 its reverse (32122132103), we get a palindrome (62245254226).

The spelling of 30123122123 in words is "thirty billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-three".