11011133142 has 32 divisors (see below), whose sum is σ = 24625058400. Its totient is φ = 3646996704.

The previous prime is 11011133129. The next prime is 11011133149. The reversal of 11011133142 is 24133111011.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011133149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640917 + ... + 657872.

It is an arithmetic number, because the mean of its divisors is an integer number (769533075).

Almost surely, 2^11011133142 is an apocalyptic number.

11011133142 is an abundant number, since it is smaller than the sum of its proper divisors (13613925258).

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

11011133142 is a wasteful number, since it uses less digits than its factorization.

11011133142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298957 (or 1298951 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11011133142 its reverse (24133111011), we get a palindrome (35144244153).

The spelling of 11011133142 in words is "eleven billion, eleven million, one hundred thirty-three thousand, one hundred forty-two".