30121133111 has 4 divisors (see below), whose sum is σ = 30176810424. Its totient is φ = 30065455800.

The previous prime is 30121133057. The next prime is 30121133113. The reversal of 30121133111 is 11133112103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11133112103 = 179 ⋅62196157.

It is a cyclic number.

It is not a de Polignac number, because 30121133111 - 2⁶ = 30121133047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30121133111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121133113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27837845 + ... + 27838926.

It is an arithmetic number, because the mean of its divisors is an integer number (7544202606).

Almost surely, 2^30121133111 is an apocalyptic number.

30121133111 is a deficient number, since it is larger than the sum of its proper divisors (55677313).

30121133111 is an equidigital number, since it uses as much as digits as its factorization.

30121133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55677312.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 30121133111 its reverse (11133112103), we get a palindrome (41254245214).

The spelling of 30121133111 in words is "thirty billion, one hundred twenty-one million, one hundred thirty-three thousand, one hundred eleven".