33120123020 has 48 divisors (see below), whose sum is σ = 72099810720. Its totient is φ = 12769496064.

The previous prime is 33120123019. The next prime is 33120123031. The reversal of 33120123020 is 2032102133.

It is a self number, because there is not a number n which added to its sum of digits gives 33120123020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129965 + ... + 288324.

It is an arithmetic number, because the mean of its divisors is an integer number (1502079390).

Almost surely, 2^33120123020 is an apocalyptic number.

It is an amenable number.

33120123020 is an abundant number, since it is smaller than the sum of its proper divisors (38979687700).

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

33120123020 is a wasteful number, since it uses less digits than its factorization.

33120123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418442 (or 418440 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 33120123020 its reverse (2032102133), we get a palindrome (35152225153).

The spelling of 33120123020 in words is "thirty-three billion, one hundred twenty million, one hundred twenty-three thousand, twenty".