11102123142 has 128 divisors (see below), whose sum is σ = 27575009280. Its totient is φ = 3282158880.

The previous prime is 11102123129. The next prime is 11102123191. The reversal of 11102123142 is 24132120111.

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 63 ways as a sum of consecutive naturals, for example, 15270783 + ... + 15271509.

It is an arithmetic number, because the mean of its divisors is an integer number (215429760).

Almost surely, 2^11102123142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11102123142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13787504640).

11102123142 is an abundant number, since it is smaller than the sum of its proper divisors (16472886138).

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

11102123142 is a wasteful number, since it uses less digits than its factorization.

11102123142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1337 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11102123142 its reverse (24132120111), we get a palindrome (35234243253).

The spelling of 11102123142 in words is "eleven billion, one hundred two million, one hundred twenty-three thousand, one hundred forty-two".