22211156440 has 64 divisors (see below), whose sum is σ = 55058188320. Its totient is φ = 7996800000.

The previous prime is 22211156431. The next prime is 22211156447. The reversal of 22211156440 is 4465111222.

It is a junction number, because it is equal to n+sod(n) for n = 22211156399 and 22211156408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211156447) 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 15 ways as a sum of consecutive naturals, for example, 205461 + ... + 294340.

Almost surely, 2^22211156440 is an apocalyptic number.

22211156440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211156440 is an abundant number, since it is smaller than the sum of its proper divisors (32847031880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22211156440 is a wasteful number, since it uses less digits than its factorization.

22211156440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499924 (or 499920 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 22211156440 its reverse (4465111222), we get a palindrome (26676267662).

The spelling of 22211156440 in words is "twenty-two billion, two hundred eleven million, one hundred fifty-six thousand, four hundred forty".