20200120200101 has 4 divisors (see below), whose sum is σ = 20896676069100. Its totient is φ = 19503564331104.

The previous prime is 20200120200079. The next prime is 20200120200107. The reversal of 20200120200101 is 10100202100202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7173687283876 + 13026432916225 = 2678374^2 + 3609215^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200120200101 - 2³⁸ = 19925242293157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200120200107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348277934456 + ... + 348277934513.

It is an arithmetic number, because the mean of its divisors is an integer number (5224169017275).

Almost surely, 2^{20200120200101} is an apocalyptic number.

It is an amenable number.

20200120200101 is a deficient number, since it is larger than the sum of its proper divisors (696555868999).

20200120200101 is an equidigital number, since it uses as much as digits as its factorization.

20200120200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696555868998.

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

Adding to 20200120200101 its reverse (10100202100202), we get a palindrome (30300322300303).

The spelling of 20200120200101 in words is "twenty trillion, two hundred billion, one hundred twenty million, two hundred thousand, one hundred one".