30121111232 has 56 divisors (see below), whose sum is σ = 62144148000. Its totient is φ = 14467977216.

The previous prime is 30121111201. The next prime is 30121111247. The reversal of 30121111232 is 23211112103.

It is a self number, because there is not a number n which added to its sum of digits gives 30121111232.

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 7 ways as a sum of consecutive naturals, for example, 328568 + ... + 410120.

Almost surely, 2^30121111232 is an apocalyptic number.

30121111232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30121111232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31072074000).

30121111232 is an abundant number, since it is smaller than the sum of its proper divisors (32023036768).

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

30121111232 is a wasteful number, since it uses less digits than its factorization.

30121111232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81793 (or 81783 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 30121111232 its reverse (23211112103), we get a palindrome (53332223335).

The spelling of 30121111232 in words is "thirty billion, one hundred twenty-one million, one hundred eleven thousand, two hundred thirty-two".