20001102122201 has 16 divisors (see below), whose sum is σ = 22297057113600. Its totient is φ = 17829954379008.

The previous prime is 20001102122189. The next prime is 20001102122213. The reversal of 20001102122201 is 10222120110002.

It is an interprime number because it is at equal distance from previous prime (20001102122189) and next prime (20001102122213).

It is not a de Polignac number, because 20001102122201 - 2³⁰ = 20000028380377 is a prime.

It is a super-2 number, since 2×20001102122201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20001102122231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5175770 + ... + 8172563.

It is an arithmetic number, because the mean of its divisors is an integer number (1393566069600).

Almost surely, 2^{20001102122201} is an apocalyptic number.

It is an amenable number.

20001102122201 is a deficient number, since it is larger than the sum of its proper divisors (2295954991399).

20001102122201 is a wasteful number, since it uses less digits than its factorization.

20001102122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13353008.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001102122201 its reverse (10222120110002), we get a palindrome (30223222232203).

The spelling of 20001102122201 in words is "twenty trillion, one billion, one hundred two million, one hundred twenty-two thousand, two hundred one".