11211212111110 has 128 divisors (see below), whose sum is σ = 22444578811008. Its totient is φ = 3998023680000.

The previous prime is 11211212111093. The next prime is 11211212111111. The reversal of 11211212111110 is 1111121211211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211212111111) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 3335675830 + ... + 3335679190.

It is an arithmetic number, because the mean of its divisors is an integer number (175348271961).

Almost surely, 2^{11211212111110} is an apocalyptic number.

11211212111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211212111110 is an abundant number, since it is smaller than the sum of its proper divisors (11233366699898).

11211212111110 is a wasteful number, since it uses less digits than its factorization.

11211212111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11211212111110 its reverse (1111121211211), we get a palindrome (12322333322321).

The spelling of 11211212111110 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred ten".