11210120111111 has 4 divisors (see below), whose sum is σ = 11211337420800. Its totient is φ = 11208902801424.

The previous prime is 11210120111101. The next prime is 11210120111131. The reversal of 11210120111111 is 11111102101211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11210120111111 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 (11210120111101) 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, 608641031 + ... + 608659448.

It is an arithmetic number, because the mean of its divisors is an integer number (2802834355200).

Almost surely, 2^{11210120111111} is an apocalyptic number.

11210120111111 is a deficient number, since it is larger than the sum of its proper divisors (1217309689).

11210120111111 is an equidigital number, since it uses as much as digits as its factorization.

11210120111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217309688.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11210120111111 its reverse (11111102101211), we get a palindrome (22321222212322).

The spelling of 11210120111111 in words is "eleven trillion, two hundred ten billion, one hundred twenty million, one hundred eleven thousand, one hundred eleven".