20201101111201 has 4 divisors (see below), whose sum is σ = 20201121647172. Its totient is φ = 20201080575232.

The previous prime is 20201101111189. The next prime is 20201101111237. The reversal of 20201101111201 is 10211110110202.

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 7203641281600 + 12997459829601 = 2683960^2 + 3605199^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201101111201 - 2⁷ = 20201101111073 is a prime.

It is a super-2 number, since 2×20201101111201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201101181201) 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, 8714056 + ... + 10785961.

It is an arithmetic number, because the mean of its divisors is an integer number (5050280411793).

Almost surely, 2^{20201101111201} is an apocalyptic number.

It is an amenable number.

20201101111201 is a deficient number, since it is larger than the sum of its proper divisors (20535971).

20201101111201 is a wasteful number, since it uses less digits than its factorization.

20201101111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20535970.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20201101111201 its reverse (10211110110202), we get a palindrome (30412211221403).

The spelling of 20201101111201 in words is "twenty trillion, two hundred one billion, one hundred one million, one hundred eleven thousand, two hundred one".