22161240403 has 8 divisors (see below), whose sum is σ = 22527504576. Its totient is φ = 21795072000.

The previous prime is 22161240401. The next prime is 22161240407. The reversal of 22161240403 is 30404216122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22161240403 - 2¹ = 22161240401 is a prime.

It is a super-2 number, since 2×22161240403² (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 (22161240401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558678 + ... + 597028.

It is an arithmetic number, because the mean of its divisors is an integer number (2815938072).

Almost surely, 2^22161240403 is an apocalyptic number.

22161240403 is a deficient number, since it is larger than the sum of its proper divisors (366264173).

22161240403 is an equidigital number, since it uses as much as digits as its factorization.

22161240403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47885.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 22161240403 its reverse (30404216122), we get a palindrome (52565456525).

The spelling of 22161240403 in words is "twenty-two billion, one hundred sixty-one million, two hundred forty thousand, four hundred three".