550221250422 has 16 divisors (see below), whose sum is σ = 1130184190512. Its totient is φ = 178450135200.

The previous prime is 550221250399. The next prime is 550221250429. The reversal of 550221250422 is 224052122055.

It is a self number, because there is not a number n which added to its sum of digits gives 550221250422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550221250429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239236829 + ... + 1239237272.

It is an arithmetic number, because the mean of its divisors is an integer number (70636511907).

Almost surely, 2^550221250422 is an apocalyptic number.

550221250422 is an abundant number, since it is smaller than the sum of its proper divisors (579962940090).

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

550221250422 is a wasteful number, since it uses less digits than its factorization.

550221250422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478474143.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 550221250422 its reverse (224052122055), we get a palindrome (774273372477).

The spelling of 550221250422 in words is "five hundred fifty billion, two hundred twenty-one million, two hundred fifty thousand, four hundred twenty-two".