22420144233 has 6 divisors (see below), whose sum is σ = 32384652794. Its totient is φ = 14946762816.

The previous prime is 22420144231. The next prime is 22420144303. The reversal of 22420144233 is 33244102422.

22420144233 is a `hidden beast` number, since 2 + 2 + 420 + 1 + 4 + 4 + 233 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22149475929 + 270668304 = 148827^2 + 16452^2 .

It is not a de Polignac number, because 22420144233 - 2¹ = 22420144231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22420144197 and 22420144206.

It is not an unprimeable number, because it can be changed into a prime (22420144231) 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 in 5 ways as a sum of consecutive naturals, for example, 1245563560 + ... + 1245563577.

Almost surely, 2^22420144233 is an apocalyptic number.

It is an amenable number.

22420144233 is a deficient number, since it is larger than the sum of its proper divisors (9964508561).

22420144233 is a wasteful number, since it uses less digits than its factorization.

22420144233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491127143 (or 2491127140 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 22420144233 its reverse (33244102422), we get a palindrome (55664246655).

The spelling of 22420144233 in words is "twenty-two billion, four hundred twenty million, one hundred forty-four thousand, two hundred thirty-three".