20330131002120 has 96 divisors (see below), whose sum is σ = 66075178642200. Its totient is φ = 5421183415296.

The previous prime is 20330131002119. The next prime is 20330131002127. The reversal of 20330131002120 is 2120013103302.

20330131002120 is a `hidden beast` number, since 2 + 0 + 330 + 1 + 310 + 0 + 2 + 1 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4601308144356 + 15728822857764 = 2145066^2 + 3965958^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20330131002093 and 20330131002102.

It is not an unprimeable number, because it can be changed into a prime (20330131002127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9776164 + ... + 11671916.

Almost surely, 2^{20330131002120} is an apocalyptic number.

20330131002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330131002120 is an abundant number, since it is smaller than the sum of its proper divisors (45745047640080).

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

20330131002120 is a wasteful number, since it uses less digits than its factorization.

20330131002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925559 (or 1925552 counting only the distinct ones).

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

Adding to 20330131002120 its reverse (2120013103302), we get a palindrome (22450144105422).

The spelling of 20330131002120 in words is "twenty trillion, three hundred thirty billion, one hundred thirty-one million, two thousand, one hundred twenty".