22021422232 has 8 divisors (see below), whose sum is σ = 41290166700. Its totient is φ = 11010711112.

The previous prime is 22021422211. The next prime is 22021422239. The reversal of 22021422232 is 23222412022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021422239) 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, 1376338882 + ... + 1376338897.

Almost surely, 2^22021422232 is an apocalyptic number.

It is an amenable number.

22021422232 is a deficient number, since it is larger than the sum of its proper divisors (19268744468).

22021422232 is a wasteful number, since it uses less digits than its factorization.

22021422232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752677785 (or 2752677781 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22021422232 its reverse (23222412022), we get a palindrome (45243834254).

The spelling of 22021422232 in words is "twenty-two billion, twenty-one million, four hundred twenty-two thousand, two hundred thirty-two".