201020221220001 has 4 divisors (see below), whose sum is σ = 268026961626672. Its totient is φ = 134013480813332.

The previous prime is 201020221219921. The next prime is 201020221220009. The reversal of 201020221220001 is 100022122020102.

201020221220001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201020221220001 - 2¹⁴ = 201020221203617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201020221220009) 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, 33503370203331 + ... + 33503370203336.

It is an arithmetic number, because the mean of its divisors is an integer number (67006740406668).

Almost surely, 2^{201020221220001} is an apocalyptic number.

It is an amenable number.

201020221220001 is a deficient number, since it is larger than the sum of its proper divisors (67006740406671).

201020221220001 is an equidigital number, since it uses as much as digits as its factorization.

201020221220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67006740406670.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201020221220001 its reverse (100022122020102), we get a palindrome (301042343240103).

The spelling of 201020221220001 in words is "two hundred one trillion, twenty billion, two hundred twenty-one million, two hundred twenty thousand, one".