20001212110011 has 16 divisors (see below), whose sum is σ = 29099161929600. Its totient is φ = 12119242662720.

The previous prime is 20001212109979. The next prime is 20001212110013. The reversal of 20001212110011 is 11001121210002.

It is not a de Polignac number, because 20001212110011 - 2⁵ = 20001212109979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001212110013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67451586 + ... + 67747463.

It is an arithmetic number, because the mean of its divisors is an integer number (1818697620600).

Almost surely, 2^{20001212110011} is an apocalyptic number.

20001212110011 is a deficient number, since it is larger than the sum of its proper divisors (9097949819589).

20001212110011 is a wasteful number, since it uses less digits than its factorization.

20001212110011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135203546.

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

Adding to 20001212110011 its reverse (11001121210002), we get a palindrome (31002333320013).

Subtracting from 20001212110011 its reverse (11001121210002), we obtain a palindrome (9000090900009).

The spelling of 20001212110011 in words is "twenty trillion, one billion, two hundred twelve million, one hundred ten thousand, eleven".