222220550 has 24 divisors (see below), whose sum is σ = 420341400. Its totient is φ = 87380480.

The previous prime is 222220519. The next prime is 222220553. The reversal of 222220550 is 55022222.

It is a happy number.

222220550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34715 + ... + 40614.

It is an arithmetic number, because the mean of its divisors is an integer number (17514225).

Almost surely, 2^222220550 is an apocalyptic number.

222220550 is a deficient number, since it is larger than the sum of its proper divisors (198120850).

222220550 is a wasteful number, since it uses less digits than its factorization.

222220550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75400 (or 75395 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 222220550 is about 14907.0637618546. The cubic root of 222220550 is about 605.7053449589.

Adding to 222220550 its reverse (55022222), we get a palindrome (277242772).

The spelling of 222220550 in words is "two hundred twenty-two million, two hundred twenty thousand, five hundred fifty".