20001001222201 has 8 divisors (see below), whose sum is σ = 20466782139584. Its totient is φ = 19535249457360.

The previous prime is 20001001222177. The next prime is 20001001222231. The reversal of 20001001222201 is 10222210010002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20001001222201 - 2¹¹ = 20001001220153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001001222231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5896941 + ... + 8647306.

It is an arithmetic number, because the mean of its divisors is an integer number (2558347767448).

Almost surely, 2^{20001001222201} is an apocalyptic number.

It is an amenable number.

20001001222201 is a deficient number, since it is larger than the sum of its proper divisors (465780917383).

20001001222201 is a wasteful number, since it uses less digits than its factorization.

20001001222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14576271.

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

Adding to 20001001222201 its reverse (10222210010002), we get a palindrome (30223211232203).

The spelling of 20001001222201 in words is "twenty trillion, one billion, one million, two hundred twenty-two thousand, two hundred one".