22144043545331 has 4 divisors (see below), whose sum is σ = 22154290675464. Its totient is φ = 22133796415200.

The previous prime is 22144043545313. The next prime is 22144043545357. The reversal of 22144043545331 is 13354534044122.

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 22144043545331 - 2¹⁰ = 22144043544307 is a prime.

It is a super-2 number, since 2×22144043545331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22144043545381) 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, 5123561825 + ... + 5123566146.

It is an arithmetic number, because the mean of its divisors is an integer number (5538572668866).

Almost surely, 2^{22144043545331} is an apocalyptic number.

22144043545331 is a deficient number, since it is larger than the sum of its proper divisors (10247130133).

22144043545331 is a wasteful number, since it uses less digits than its factorization.

22144043545331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10247130132.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 22144043545331 its reverse (13354534044122), we get a palindrome (35498577589453).

The spelling of 22144043545331 in words is "twenty-two trillion, one hundred forty-four billion, forty-three million, five hundred forty-five thousand, three hundred thirty-one".