20201002220101 has 4 divisors (see below), whose sum is σ = 20201059477900. Its totient is φ = 20200944962304.

The previous prime is 20201002220093. The next prime is 20201002220129. The reversal of 20201002220101 is 10102220010202.

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 12737582550625 + 7463419669476 = 3568975^2 + 2731926^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201002220101 - 2³ = 20201002220093 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 (20201002220701) 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, 28096386 + ... + 28806403.

It is an arithmetic number, because the mean of its divisors is an integer number (5050264869475).

Almost surely, 2^{20201002220101} is an apocalyptic number.

It is an amenable number.

20201002220101 is a deficient number, since it is larger than the sum of its proper divisors (57257799).

20201002220101 is an equidigital number, since it uses as much as digits as its factorization.

20201002220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57257798.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20201002220101 its reverse (10102220010202), we get a palindrome (30303222230303).

The spelling of 20201002220101 in words is "twenty trillion, two hundred one billion, two million, two hundred twenty thousand, one hundred one".