20002111021101 has 64 divisors (see below), whose sum is σ = 29726419610880. Its totient is φ = 11861718589440.

The previous prime is 20002111021097. The next prime is 20002111021111. The reversal of 20002111021101 is 10112011120002.

It is not a de Polignac number, because 20002111021101 - 2² = 20002111021097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002111021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 550806921 + ... + 550843233.

It is an arithmetic number, because the mean of its divisors is an integer number (464475306420).

Almost surely, 2^{20002111021101} is an apocalyptic number.

It is an amenable number.

20002111021101 is a deficient number, since it is larger than the sum of its proper divisors (9724308589779).

20002111021101 is a wasteful number, since it uses less digits than its factorization.

20002111021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38206.

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

Adding to 20002111021101 its reverse (10112011120002), we get a palindrome (30114122141103).

The spelling of 20002111021101 in words is "twenty trillion, two billion, one hundred eleven million, twenty-one thousand, one hundred one".