20001121201101 has 8 divisors (see below), whose sum is σ = 27388922725984. Its totient is φ = 12973700238480.

The previous prime is 20001121201093. The next prime is 20001121201111. The reversal of 20001121201101 is 10110212110002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20001121201101 - 2³ = 20001121201093 is a prime.

It is a super-2 number, since 2×20001121201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001121201111) 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, 90095140435 + ... + 90095140656.

It is an arithmetic number, because the mean of its divisors is an integer number (3423615340748).

Almost surely, 2^{20001121201101} is an apocalyptic number.

It is an amenable number.

20001121201101 is a deficient number, since it is larger than the sum of its proper divisors (7387801524883).

20001121201101 is a wasteful number, since it uses less digits than its factorization.

20001121201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180190281131.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20001121201101 its reverse (10110212110002), we get a palindrome (30111333311103).

The spelling of 20001121201101 in words is "twenty trillion, one billion, one hundred twenty-one million, two hundred one thousand, one hundred one".