22144651 has 2 divisors, whose sum is σ = 22144652. Its totient is φ = 22144650.

The previous prime is 22144631. The next prime is 22144657. The reversal of 22144651 is 15644122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22144651 - 2¹³ = 22136459 is a prime.

It is not a weakly prime, because it can be changed into another prime (22144657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072325 + 11072326.

It is an arithmetic number, because the mean of its divisors is an integer number (11072326).

Almost surely, 2^22144651 is an apocalyptic number.

22144651 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144651 is an equidigital number, since it uses as much as digits as its factorization.

22144651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 22144651 is about 4705.8103446697. The cubic root of 22144651 is about 280.8167098751.

Adding to 22144651 its reverse (15644122), we get a palindrome (37788773).

The spelling of 22144651 in words is "twenty-two million, one hundred forty-four thousand, six hundred fifty-one".