11122121221110 has 48 divisors (see below), whose sum is σ = 28936936285920. Its totient is φ = 2963907083520.

The previous prime is 11122121221091. The next prime is 11122121221193. The reversal of 11122121221110 is 1112212122111.

It is a happy number.

11122121221110 is a `hidden beast` number, since 1 + 11 + 221 + 212 + 211 + 10 = 666.

11122121221110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41363346 + ... + 41631365.

It is an arithmetic number, because the mean of its divisors is an integer number (602852839290).

Almost surely, 2^{11122121221110} is an apocalyptic number.

11122121221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11122121221110 is an abundant number, since it is smaller than the sum of its proper divisors (17814815064810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11122121221110 is a wasteful number, since it uses less digits than its factorization.

11122121221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82996213 (or 82996210 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11122121221110 its reverse (1112212122111), we get a palindrome (12234333343221).

The spelling of 11122121221110 in words is "eleven trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".