550221813120 has 256 divisors, whose sum is σ = 2015462292480. Its totient is φ = 125069598720.

The previous prime is 550221813109. The next prime is 550221813131. The reversal of 550221813120 is 21318122055.

It is an interprime number because it is at equal distance from previous prime (550221813109) and next prime (550221813131).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2319549 + ... + 2545731.

It is an arithmetic number, because the mean of its divisors is an integer number (7872899580).

Almost surely, 2^550221813120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550221813120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1007731146240).

550221813120 is an abundant number, since it is smaller than the sum of its proper divisors (1465240479360).

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

550221813120 is a wasteful number, since it uses less digits than its factorization.

550221813120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226393 (or 226381 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 550221813120 its reverse (21318122055), we get a palindrome (571539935175).

The spelling of 550221813120 in words is "five hundred fifty billion, two hundred twenty-one million, eight hundred thirteen thousand, one hundred twenty".