22131236655 has 96 divisors (see below), whose sum is σ = 42899770368. Its totient is φ = 10463904000.

The previous prime is 22131236653. The next prime is 22131236657. The reversal of 22131236655 is 55663213122.

It is an interprime number because it is at equal distance from previous prime (22131236653) and next prime (22131236657).

It is not a de Polignac number, because 22131236655 - 2¹ = 22131236653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131236653) 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 95 ways as a sum of consecutive naturals, for example, 3346362 + ... + 3352968.

It is an arithmetic number, because the mean of its divisors is an integer number (446872608).

Almost surely, 2^22131236655 is an apocalyptic number.

22131236655 is a deficient number, since it is larger than the sum of its proper divisors (20768533713).

22131236655 is a wasteful number, since it uses less digits than its factorization.

22131236655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6797 (or 6794 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

Adding to 22131236655 its reverse (55663213122), we get a palindrome (77794449777).

The spelling of 22131236655 in words is "twenty-two billion, one hundred thirty-one million, two hundred thirty-six thousand, six hundred fifty-five".