30012115123 has 2 divisors, whose sum is σ = 30012115124. Its totient is φ = 30012115122.

The previous prime is 30012115121. The next prime is 30012115193. The reversal of 30012115123 is 32151121003.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30012115123 - 2¹ = 30012115121 is a prime.

Together with 30012115121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30012115123.

It is not a weakly prime, because it can be changed into another prime (30012115121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006057561 + 15006057562.

It is an arithmetic number, because the mean of its divisors is an integer number (15006057562).

Almost surely, 2^30012115123 is an apocalyptic number.

30012115123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30012115123 is an equidigital number, since it uses as much as digits as its factorization.

30012115123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 30012115123 its reverse (32151121003), we get a palindrome (62163236126).

The spelling of 30012115123 in words is "thirty billion, twelve million, one hundred fifteen thousand, one hundred twenty-three".