11102120210111 has 12 divisors (see below), whose sum is σ = 12916494738792. Its totient is φ = 9514788898608.

The previous prime is 11102120210063. The next prime is 11102120210177. The reversal of 11102120210111 is 11101202120111.

It is not a de Polignac number, because 11102120210111 - 2²² = 11102116015807 is a prime.

It is a super-2 number, since 2×11102120210111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102120210191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15285980 + ... + 15995793.

It is an arithmetic number, because the mean of its divisors is an integer number (1076374561566).

Almost surely, 2^{11102120210111} is an apocalyptic number.

11102120210111 is a deficient number, since it is larger than the sum of its proper divisors (1814374528681).

11102120210111 is an equidigital number, since it uses as much as digits as its factorization.

11102120210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31289030 (or 31289023 counting only the distinct ones).

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

Adding to 11102120210111 its reverse (11101202120111), we get a palindrome (22203322330222).

Subtracting from 11102120210111 its reverse (11101202120111), we obtain a square (918090000 = 30300²).

The spelling of 11102120210111 in words is "eleven trillion, one hundred two billion, one hundred twenty million, two hundred ten thousand, one hundred eleven".