20001222222201 has 96 divisors (see below), whose sum is σ = 33781974220800. Its totient is φ = 11279618064000.

The previous prime is 20001222222181. The next prime is 20001222222209. The reversal of 20001222222201 is 10222222210002.

20001222222201 is a `hidden beast` number, since 20 + 0 + 0 + 1 + 222 + 222 + 201 = 666.

It is not a de Polignac number, because 20001222222201 - 2¹⁹ = 20001221697913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001222222209) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 602448000 + ... + 602481198.

It is an arithmetic number, because the mean of its divisors is an integer number (351895564800).

Almost surely, 2^{20001222222201} is an apocalyptic number.

It is an amenable number.

20001222222201 is a deficient number, since it is larger than the sum of its proper divisors (13780751998599).

20001222222201 is a wasteful number, since it uses less digits than its factorization.

20001222222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40427 (or 40424 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20001222222201 its reverse (10222222210002), we get a palindrome (30223444432203).

The spelling of 20001222222201 in words is "twenty trillion, one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred one".