22012505154440 has 32 divisors (see below), whose sum is σ = 49528270736280. Its totient is φ = 8804978214912.

The previous prime is 22012505154439. The next prime is 22012505154467. The reversal of 22012505154440 is 4445150521022.

It can be written as a sum of positive squares in 4 ways, for example, as 16667965700164 + 5344539454276 = 4082642^2 + 2311826^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22012505154440.

It is an unprimeable number.

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, 26562842 + ... + 27378998.

Almost surely, 2^{22012505154440} is an apocalyptic number.

22012505154440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012505154440 is an abundant number, since it is smaller than the sum of its proper divisors (27515765581840).

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

22012505154440 is a wasteful number, since it uses less digits than its factorization.

22012505154440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490441 (or 1490437 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 22012505154440 its reverse (4445150521022), we get a palindrome (26457655675462).

The spelling of 22012505154440 in words is "twenty-two trillion, twelve billion, five hundred five million, one hundred fifty-four thousand, four hundred forty".