22238306236 has 24 divisors (see below), whose sum is σ = 39535960464. Its totient is φ = 10942980480.

The previous prime is 22238306221. The next prime is 22238306239. The reversal of 22238306236 is 63260383222.

It is a super-2 number, since 2×22238306236² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22238306195 and 22238306204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238306239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52011 + ... + 217213.

It is an arithmetic number, because the mean of its divisors is an integer number (1647331686).

Almost surely, 2^22238306236 is an apocalyptic number.

It is an amenable number.

22238306236 is a deficient number, since it is larger than the sum of its proper divisors (17297654228).

22238306236 is a wasteful number, since it uses less digits than its factorization.

22238306236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165741 (or 165739 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 37.

Adding to 22238306236 its reverse (63260383222), we get a palindrome (85498689458).

The spelling of 22238306236 in words is "twenty-two billion, two hundred thirty-eight million, three hundred six thousand, two hundred thirty-six".