2223221550 has 96 divisors (see below), whose sum is σ = 6055862400. Its totient is φ = 535286400.

The previous prime is 2223221549. The next prime is 2223221557. The reversal of 2223221550 is 551223222.

It is a self number, because there is not a number n which added to its sum of digits gives 2223221550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223221557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241329 + ... + 250371.

It is an arithmetic number, because the mean of its divisors is an integer number (63081900).

Almost surely, 2^2223221550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2223221550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3027931200).

2223221550 is an abundant number, since it is smaller than the sum of its proper divisors (3832640850).

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

2223221550 is a wasteful number, since it uses less digits than its factorization.

2223221550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9218 (or 9213 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2223221550 is about 47151.0503594565. The cubic root of 2223221550 is about 1305.1514628739.

Adding to 2223221550 its reverse (551223222), we get a palindrome (2774444772).

The spelling of 2223221550 in words is "two billion, two hundred twenty-three million, two hundred twenty-one thousand, five hundred fifty".