11142133145221 has 16 divisors (see below), whose sum is σ = 12069992309760. Its totient is φ = 10224547568640.

The previous prime is 11142133145207. The next prime is 11142133145233. The reversal of 11142133145221 is 12254133124111.

It is a cyclic number.

It is not a de Polignac number, because 11142133145221 - 2³¹ = 11139985661573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142133145281) 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, 1764060 + ... + 5039461.

It is an arithmetic number, because the mean of its divisors is an integer number (754374519360).

Almost surely, 2^{11142133145221} is an apocalyptic number.

It is an amenable number.

11142133145221 is a deficient number, since it is larger than the sum of its proper divisors (927859164539).

11142133145221 is a wasteful number, since it uses less digits than its factorization.

11142133145221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804276.

The product of its digits is 5760, while the sum is 31.

Adding to 11142133145221 its reverse (12254133124111), we get a palindrome (23396266269332).

The spelling of 11142133145221 in words is "eleven trillion, one hundred forty-two billion, one hundred thirty-three million, one hundred forty-five thousand, two hundred twenty-one".