30120233121 has 24 divisors (see below), whose sum is σ = 47509381920. Its totient is φ = 18236534400.

The previous prime is 30120233047. The next prime is 30120233137. The reversal of 30120233121 is 12133202103.

It is not a de Polignac number, because 30120233121 - 2⁷ = 30120232993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30120233094 and 30120233103.

It is not an unprimeable number, because it can be changed into a prime (30120233321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50875 + ... + 250656.

It is an arithmetic number, because the mean of its divisors is an integer number (1979557580).

Almost surely, 2^30120233121 is an apocalyptic number.

It is an amenable number.

30120233121 is a deficient number, since it is larger than the sum of its proper divisors (17389148799).

30120233121 is a wasteful number, since it uses less digits than its factorization.

30120233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302557 (or 302554 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30120233121 its reverse (12133202103), we get a palindrome (42253435224).

The spelling of 30120233121 in words is "thirty billion, one hundred twenty million, two hundred thirty-three thousand, one hundred twenty-one".