30120121332 has 72 divisors (see below), whose sum is σ = 87031526400. Its totient is φ = 8603984448.

The previous prime is 30120121309. The next prime is 30120121337. The reversal of 30120121332 is 23312102103.

30120121332 is a `hidden beast` number, since 301 + 20 + 12 + 1 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120121337) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1684294 + ... + 1702082.

It is an arithmetic number, because the mean of its divisors is an integer number (1208771200).

Almost surely, 2^30120121332 is an apocalyptic number.

It is an amenable number.

30120121332 is an abundant number, since it is smaller than the sum of its proper divisors (56911405068).

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

30120121332 is a wasteful number, since it uses less digits than its factorization.

30120121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24525 (or 24520 counting only the distinct ones).

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

Adding to 30120121332 its reverse (23312102103), we get a palindrome (53432223435).

The spelling of 30120121332 in words is "thirty billion, one hundred twenty million, one hundred twenty-one thousand, three hundred thirty-two".