20010100020011 has 4 divisors (see below), whose sum is σ = 20016335641800. Its totient is φ = 20003864398224.

The previous prime is 20010100020007. The next prime is 20010100020017. The reversal of 20010100020011 is 11002000101002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20010100020011 - 2² = 20010100020007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010100020017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3117806081 + ... + 3117812498.

It is an arithmetic number, because the mean of its divisors is an integer number (5004083910450).

Almost surely, 2^{20010100020011} is an apocalyptic number.

20010100020011 is a deficient number, since it is larger than the sum of its proper divisors (6235621789).

20010100020011 is an equidigital number, since it uses as much as digits as its factorization.

20010100020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235621788.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20010100020011 its reverse (11002000101002), we get a palindrome (31012100121013).

The spelling of 20010100020011 in words is "twenty trillion, ten billion, one hundred million, twenty thousand, eleven".