11144332121 has 4 divisors (see below), whose sum is σ = 12001588452. Its totient is φ = 10287075792.

The previous prime is 11144332081. The next prime is 11144332123. The reversal of 11144332121 is 12123344111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 526060096 + 10618272025 = 22936^2 + 103045^2 .

It is a cyclic number.

It is not a de Polignac number, because 11144332121 - 2¹⁰ = 11144331097 is a prime.

It is a super-2 number, since 2×11144332121² (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 (11144332123) 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, 428628146 + ... + 428628171.

It is an arithmetic number, because the mean of its divisors is an integer number (3000397113).

Almost surely, 2^11144332121 is an apocalyptic number.

It is an amenable number.

11144332121 is a deficient number, since it is larger than the sum of its proper divisors (857256331).

11144332121 is an equidigital number, since it uses as much as digits as its factorization.

11144332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857256330.

The product of its digits is 576, while the sum is 23.

Adding to 11144332121 its reverse (12123344111), we get a palindrome (23267676232).

The spelling of 11144332121 in words is "eleven billion, one hundred forty-four million, three hundred thirty-two thousand, one hundred twenty-one".