11142213331 has 4 divisors (see below), whose sum is σ = 11210570632. Its totient is φ = 11073856032.

The previous prime is 11142213323. The next prime is 11142213353. The reversal of 11142213331 is 13331224111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11142213331 - 2³ = 11142213323 is a prime.

It is a super-2 number, since 2×11142213331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11142213361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34178406 + ... + 34178731.

It is an arithmetic number, because the mean of its divisors is an integer number (2802642658).

Almost surely, 2^11142213331 is an apocalyptic number.

11142213331 is a deficient number, since it is larger than the sum of its proper divisors (68357301).

11142213331 is an equidigital number, since it uses as much as digits as its factorization.

11142213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68357300.

The product of its digits is 432, while the sum is 22.

Adding to 11142213331 its reverse (13331224111), we get a palindrome (24473437442).

The spelling of 11142213331 in words is "eleven billion, one hundred forty-two million, two hundred thirteen thousand, three hundred thirty-one".