20121333333120 has 96 divisors (see below), whose sum is σ = 69481479185820. Its totient is φ = 5365688887296.

The previous prime is 20121333333109. The next prime is 20121333333133. The reversal of 20121333333120 is 2133333312102.

20121333333120 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 13 + 3 + 333 + 312 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18677125463616 + 1444207869504 = 4321704^2 + 1201752^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1746637759 + ... + 1746649278.

Almost surely, 2^{20121333333120} is an apocalyptic number.

20121333333120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121333333120 is an abundant number, since it is smaller than the sum of its proper divisors (49360145852700).

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

20121333333120 is a wasteful number, since it uses less digits than its factorization.

20121333333120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493287062 (or 3493287047 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 20121333333120 its reverse (2133333312102), we get a palindrome (22254666645222).

The spelling of 20121333333120 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty-three million, three hundred thirty-three thousand, one hundred twenty".