20001120120002 has 24 divisors (see below), whose sum is σ = 35472043421820. Its totient is φ = 8431385528160.

The previous prime is 20001120119971. The next prime is 20001120120011. The reversal of 20001120120002 is 20002102110002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14566351594921 + 5434768525081 = 3816589^2 + 2331259^2 .

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, 1672887977 + ... + 1672899932.

Almost surely, 2^{20001120120002} is an apocalyptic number.

20001120120002 is a deficient number, since it is larger than the sum of its proper divisors (15470923301818).

20001120120002 is a wasteful number, since it uses less digits than its factorization.

20001120120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345787986 (or 3345787979 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001120120002 its reverse (20002102110002), we get a palindrome (40003222230004).

The spelling of 20001120120002 in words is "twenty trillion, one billion, one hundred twenty million, one hundred twenty thousand, two".