22052321550 has 96 divisors (see below), whose sum is σ = 69447340800. Its totient is φ = 5040528480.

The previous prime is 22052321531. The next prime is 22052321561. The reversal of 22052321550 is 5512325022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1157340 + ... + 1176239.

It is an arithmetic number, because the mean of its divisors is an integer number (723409800).

Almost surely, 2^22052321550 is an apocalyptic number.

22052321550 is an abundant number, since it is smaller than the sum of its proper divisors (47395019250).

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

22052321550 is a wasteful number, since it uses less digits than its factorization.

22052321550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333607 (or 2333596 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 22052321550 its reverse (5512325022), we get a palindrome (27564646572).

The spelling of 22052321550 in words is "twenty-two billion, fifty-two million, three hundred twenty-one thousand, five hundred fifty".