20201133312001 has 4 divisors (see below), whose sum is σ = 20582286770772. Its totient is φ = 19819979853232.

The previous prime is 20201133311951. The next prime is 20201133312053. The reversal of 20201133312001 is 10021333110202.

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 14373500737600 + 5827632574401 = 3791240^2 + 2414049^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201133312001 - 2⁷ = 20201133311873 is a prime.

It is a super-2 number, since 2×20201133312001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201133312001.

It is not an unprimeable number, because it can be changed into a prime (20201133312601) 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, 190576729306 + ... + 190576729411.

It is an arithmetic number, because the mean of its divisors is an integer number (5145571692693).

Almost surely, 2^{20201133312001} is an apocalyptic number.

It is an amenable number.

20201133312001 is a deficient number, since it is larger than the sum of its proper divisors (381153458771).

20201133312001 is an equidigital number, since it uses as much as digits as its factorization.

20201133312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381153458770.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20201133312001 its reverse (10021333110202), we get a palindrome (30222466422203).

The spelling of 20201133312001 in words is "twenty trillion, two hundred one billion, one hundred thirty-three million, three hundred twelve thousand, one".