20111211201110 has 16 divisors (see below), whose sum is σ = 36200480656032. Its totient is φ = 8044417704000.

The previous prime is 20111211201071. The next prime is 20111211201127. The reversal of 20111211201110 is 1110211211102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7072871 + ... + 9499890.

It is an arithmetic number, because the mean of its divisors is an integer number (2262530041002).

Almost surely, 2^{20111211201110} is an apocalyptic number.

20111211201110 is a deficient number, since it is larger than the sum of its proper divisors (16089269454922).

20111211201110 is a wasteful number, since it uses less digits than its factorization.

20111211201110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16694119.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20111211201110 its reverse (1110211211102), we get a palindrome (21221422412212).

The spelling of 20111211201110 in words is "twenty trillion, one hundred eleven billion, two hundred eleven million, two hundred one thousand, one hundred ten".