22421231001 has 20 divisors (see below), whose sum is σ = 36069864292. Its totient is φ = 13797679968.

The previous prime is 22421230981. The next prime is 22421231009. The reversal of 22421231001 is 10013212422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15247310400 + 7173920601 = 123480^2 + 84699^2 .

It is not a de Polignac number, because 22421231001 - 2¹¹ = 22421228953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22421231009) 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 19 ways as a sum of consecutive naturals, for example, 10645306 + ... + 10647411.

Almost surely, 2^22421231001 is an apocalyptic number.

It is an amenable number.

22421231001 is a deficient number, since it is larger than the sum of its proper divisors (13648633291).

22421231001 is a wasteful number, since it uses less digits than its factorization.

22421231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21292742 (or 21292733 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22421231001 its reverse (10013212422), we get a palindrome (32434443423).

The spelling of 22421231001 in words is "twenty-two billion, four hundred twenty-one million, two hundred thirty-one thousand, one".