11321022042 has 48 divisors (see below), whose sum is σ = 26893339200. Its totient is φ = 3413361600.

The previous prime is 11321021977. The next prime is 11321022043. The reversal of 11321022042 is 24022012311.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (11321022043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104259 + ... + 183062.

It is an arithmetic number, because the mean of its divisors is an integer number (560277900).

Almost surely, 2^11321022042 is an apocalyptic number.

11321022042 is an abundant number, since it is smaller than the sum of its proper divisors (15572317158).

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

11321022042 is a wasteful number, since it uses less digits than its factorization.

11321022042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287539 (or 287536 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11321022042 its reverse (24022012311), we get a palindrome (35343034353).

The spelling of 11321022042 in words is "eleven billion, three hundred twenty-one million, twenty-two thousand, forty-two".