20001101120001 has 96 divisors (see below), whose sum is σ = 31458590392320. Its totient is φ = 12682440993600.

The previous prime is 20001101119999. The next prime is 20001101120003. The reversal of 20001101120001 is 10002110110002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20001101119999) and next prime (20001101120003).

It is not a de Polignac number, because 20001101120001 - 2¹ = 20001101119999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20001101120003) 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, 138563496 + ... + 138707766.

It is an arithmetic number, because the mean of its divisors is an integer number (327693649920).

Almost surely, 2^{20001101120001} is an apocalyptic number.

It is an amenable number.

20001101120001 is a deficient number, since it is larger than the sum of its proper divisors (11457489272319).

20001101120001 is a wasteful number, since it uses less digits than its factorization.

20001101120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144609 (or 144597 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20001101120001 its reverse (10002110110002), we get a palindrome (30003211230003).

The spelling of 20001101120001 in words is "twenty trillion, one billion, one hundred one million, one hundred twenty thousand, one".