20002120222201 has 8 divisors (see below), whose sum is σ = 21540867057864. Its totient is φ = 18463390844160.

The previous prime is 20002120222127. The next prime is 20002120222297. The reversal of 20002120222201 is 10222202120002.

It can be written as a sum of positive squares in 4 ways, for example, as 5602220343801 + 14399899878400 = 2366901^2 + 3794720^2 .

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 20002120222201 - 2²⁹ = 20001583351289 is a prime.

It is a super-2 number, since 2×20002120222201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002120202201) 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, 1934656 + ... + 6614161.

It is an arithmetic number, because the mean of its divisors is an integer number (2692608382233).

Almost surely, 2^{20002120222201} is an apocalyptic number.

It is an amenable number.

20002120222201 is a deficient number, since it is larger than the sum of its proper divisors (1538746835663).

20002120222201 is a wasteful number, since it uses less digits than its factorization.

20002120222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728811.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20002120222201 its reverse (10222202120002), we get a palindrome (30224322342203).

The spelling of 20002120222201 in words is "twenty trillion, two billion, one hundred twenty million, two hundred twenty-two thousand, two hundred one".