20001122102001 has 16 divisors (see below), whose sum is σ = 27007224232320. Its totient is φ = 13165286179200.

The previous prime is 20001122101997. The next prime is 20001122102011. The reversal of 20001122102001 is 10020122110002.

It is not a de Polignac number, because 20001122102001 - 2² = 20001122101997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001122102011) 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, 91827580 + ... + 92045133.

It is an arithmetic number, because the mean of its divisors is an integer number (1687951514520).

Almost surely, 2^{20001122102001} is an apocalyptic number.

It is an amenable number.

20001122102001 is a deficient number, since it is larger than the sum of its proper divisors (7006102130319).

20001122102001 is a wasteful number, since it uses less digits than its factorization.

20001122102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183873176.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001122102001 its reverse (10020122110002), we get a palindrome (30021244212003).

The spelling of 20001122102001 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred two thousand, one".