30121110120 has 64 divisors (see below), whose sum is σ = 90452376000. Its totient is φ = 8024380928.

The previous prime is 30121110067. The next prime is 30121110157. The reversal of 30121110120 is 2101112103.

It is a super-2 number, since 2×30121110120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30121110096 and 30121110105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885 + ... + 245444.

It is an arithmetic number, because the mean of its divisors is an integer number (1413318375).

Almost surely, 2^30121110120 is an apocalyptic number.

30121110120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30121110120 is an abundant number, since it is smaller than the sum of its proper divisors (60331265880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30121110120 is a wasteful number, since it uses less digits than its factorization.

30121110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247362 (or 247358 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 30121110120 its reverse (2101112103), we get a palindrome (32222222223).

The spelling of 30121110120 in words is "thirty billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty".