20002120011101 has 16 divisors (see below), whose sum is σ = 22342669862400. Its totient is φ = 17818279169328.

The previous prime is 20002120011077. The next prime is 20002120011131. The reversal of 20002120011101 is 10111002120002.

It is a cyclic number.

It is not a de Polignac number, because 20002120011101 - 2¹⁸ = 20002119748957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002120011131) 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 15 ways as a sum of consecutive naturals, for example, 387867791 + ... + 387919356.

It is an arithmetic number, because the mean of its divisors is an integer number (1396416866400).

Almost surely, 2^{20002120011101} is an apocalyptic number.

It is an amenable number.

20002120011101 is a deficient number, since it is larger than the sum of its proper divisors (2340549851299).

20002120011101 is a wasteful number, since it uses less digits than its factorization.

20002120011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775787248.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20002120011101 its reverse (10111002120002), we get a palindrome (30113122131103).

The spelling of 20002120011101 in words is "twenty trillion, two billion, one hundred twenty million, eleven thousand, one hundred one".