30120111023 has 4 divisors (see below), whose sum is σ = 30121122000. Its totient is φ = 30119100048.

The previous prime is 30120111017. The next prime is 30120111061. The reversal of 30120111023 is 32011102103.

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 30120111023 - 2⁸ = 30120110767 is a prime.

It is a super-2 number, since 2×30120111023² (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 = 30120110989 and 30120111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120111823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459398 + ... + 520851.

It is an arithmetic number, because the mean of its divisors is an integer number (7530280500).

Almost surely, 2^30120111023 is an apocalyptic number.

30120111023 is a deficient number, since it is larger than the sum of its proper divisors (1010977).

30120111023 is an equidigital number, since it uses as much as digits as its factorization.

30120111023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010976.

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

Adding to 30120111023 its reverse (32011102103), we get a palindrome (62131213126).

The spelling of 30120111023 in words is "thirty billion, one hundred twenty million, one hundred eleven thousand, twenty-three".