20111122100111 has 8 divisors (see below), whose sum is σ = 22995671992224. Its totient is φ = 17229455320320.

The previous prime is 20111122100033. The next prime is 20111122100117. The reversal of 20111122100111 is 11100122111102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20111122100111 - 2³⁰ = 20110048358287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111122100117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720763130 + ... + 720791031.

It is an arithmetic number, because the mean of its divisors is an integer number (2874458999028).

Almost surely, 2^{20111122100111} is an apocalyptic number.

20111122100111 is a deficient number, since it is larger than the sum of its proper divisors (2884549892113).

20111122100111 is a wasteful number, since it uses less digits than its factorization.

20111122100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441556161.

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

Adding to 20111122100111 its reverse (11100122111102), we get a palindrome (31211244211213).

The spelling of 20111122100111 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, one hundred thousand, one hundred eleven".