21607223050 has 72 divisors (see below), whose sum is σ = 46930505184. Its totient is φ = 7250310240.

The previous prime is 21607223047. The next prime is 21607223051. The reversal of 21607223050 is 5032270612.

It is not an unprimeable number, because it can be changed into a prime (21607223051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 759177 + ... + 787123.

It is an arithmetic number, because the mean of its divisors is an integer number (651812572).

Almost surely, 2^21607223050 is an apocalyptic number.

21607223050 is an abundant number, since it is smaller than the sum of its proper divisors (25323282134).

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

21607223050 is a wasteful number, since it uses less digits than its factorization.

21607223050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28060 (or 28008 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 21607223050 its reverse (5032270612), we get a palindrome (26639493662).

The spelling of 21607223050 in words is "twenty-one billion, six hundred seven million, two hundred twenty-three thousand, fifty".