201020021202001 has 4 divisors (see below), whose sum is σ = 204812851790772. Its totient is φ = 197227190613232.

The previous prime is 201020021201981. The next prime is 201020021202017. The reversal of 201020021202001 is 100202120020102.

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 53164732702225 + 147855288499776 = 7291415^2 + 12159576^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020021202001 - 2⁵ = 201020021201969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201020021202701) 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, 1896415294306 + ... + 1896415294411.

It is an arithmetic number, because the mean of its divisors is an integer number (51203212947693).

Almost surely, 2^{201020021202001} is an apocalyptic number.

It is an amenable number.

201020021202001 is a deficient number, since it is larger than the sum of its proper divisors (3792830588771).

201020021202001 is an equidigital number, since it uses as much as digits as its factorization.

201020021202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792830588770.

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

Adding to 201020021202001 its reverse (100202120020102), we get a palindrome (301222141222103).

The spelling of 201020021202001 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred two thousand, one".