30123020111 has 2 divisors, whose sum is σ = 30123020112. Its totient is φ = 30123020110.

The previous prime is 30123020107. The next prime is 30123020113. The reversal of 30123020111 is 11102032103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30123020111 - 2² = 30123020107 is a prime.

Together with 30123020113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30123020113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061510055 + 15061510056.

It is an arithmetic number, because the mean of its divisors is an integer number (15061510056).

Almost surely, 2^30123020111 is an apocalyptic number.

30123020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123020111 is an equidigital number, since it uses as much as digits as its factorization.

30123020111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30123020111 its reverse (11102032103), we get a palindrome (41225052214).

The spelling of 30123020111 in words is "thirty billion, one hundred twenty-three million, twenty thousand, one hundred eleven".