20200120001 has 24 divisors (see below), whose sum is σ = 22568478720. Its totient is φ = 18041329152.

The previous prime is 20200119991. The next prime is 20200120007. The reversal of 20200120001 is 10002100202.

It is not a de Polignac number, because 20200120001 - 2¹⁴ = 20200103617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20200120007) 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, 832205 + ... + 856133.

It is an arithmetic number, because the mean of its divisors is an integer number (940353280).

Almost surely, 2^20200120001 is an apocalyptic number.

It is an amenable number.

20200120001 is a deficient number, since it is larger than the sum of its proper divisors (2368358719).

20200120001 is a wasteful number, since it uses less digits than its factorization.

20200120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24113 (or 24096 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20200120001 its reverse (10002100202), we get a palindrome (30202220203).

The spelling of 20200120001 in words is "twenty billion, two hundred million, one hundred twenty thousand, one".