20021103111101 has 8 divisors (see below), whose sum is σ = 20025105389184. Its totient is φ = 20017101250080.

The previous prime is 20021103111089. The next prime is 20021103111109. The reversal of 20021103111101 is 10111130112002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021103111101 is a prime.

It is a super-2 number, since 2×20021103111101² (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 (20021103111109) 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, 106522130 + ... + 106709916.

It is an arithmetic number, because the mean of its divisors is an integer number (2503138173648).

Almost surely, 2^{20021103111101} is an apocalyptic number.

It is an amenable number.

20021103111101 is a deficient number, since it is larger than the sum of its proper divisors (4002278083).

20021103111101 is a wasteful number, since it uses less digits than its factorization.

20021103111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208531.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 20021103111101 its reverse (10111130112002), we get a palindrome (30132233223103).

The spelling of 20021103111101 in words is "twenty trillion, twenty-one billion, one hundred three million, one hundred eleven thousand, one hundred one".