22011441451 has 4 divisors (see below), whose sum is σ = 22606345312. Its totient is φ = 21416537592.

The previous prime is 22011441443. The next prime is 22011441457. The reversal of 22011441451 is 15414411022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15414411022 = 2 ⋅7707205511.

It is a cyclic number.

It is not a de Polignac number, because 22011441451 - 2³ = 22011441443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011441457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297451875 + ... + 297451948.

It is an arithmetic number, because the mean of its divisors is an integer number (5651586328).

Almost surely, 2^22011441451 is an apocalyptic number.

22011441451 is a deficient number, since it is larger than the sum of its proper divisors (594903861).

22011441451 is an equidigital number, since it uses as much as digits as its factorization.

22011441451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594903860.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 22011441451 its reverse (15414411022), we get a palindrome (37425852473).

The spelling of 22011441451 in words is "twenty-two billion, eleven million, four hundred forty-one thousand, four hundred fifty-one".