20001121102101 has 8 divisors (see below), whose sum is σ = 26932202672544. Its totient is φ = 13202060133200.

The previous prime is 20001121102087. The next prime is 20001121102111. The reversal of 20001121102101 is 10120112110002.

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 20001121102101 - 2⁶ = 20001121102037 is a prime.

It is a super-2 number, since 2×20001121102101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001121102111) 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, 33005150031 + ... + 33005150636.

It is an arithmetic number, because the mean of its divisors is an integer number (3366525334068).

Almost surely, 2^{20001121102101} is an apocalyptic number.

It is an amenable number.

20001121102101 is a deficient number, since it is larger than the sum of its proper divisors (6931081570443).

20001121102101 is a wasteful number, since it uses less digits than its factorization.

20001121102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66010300771.

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

Adding to 20001121102101 its reverse (10120112110002), we get a palindrome (30121233212103).

The spelling of 20001121102101 in words is "twenty trillion, one billion, one hundred twenty-one million, one hundred two thousand, one hundred one".