1228538222 has 4 divisors (see below), whose sum is σ = 1842807336. Its totient is φ = 614269110.

The previous prime is 1228538189. The next prime is 1228538239. The reversal of 1228538222 is 2228358221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307134554 + ... + 307134557.

It is an arithmetic number, because the mean of its divisors is an integer number (460701834).

Almost surely, 2^1228538222 is an apocalyptic number.

1228538222 is a deficient number, since it is larger than the sum of its proper divisors (614269114).

1228538222 is an equidigital number, since it uses as much as digits as its factorization.

1228538222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614269113.

The product of its digits is 30720, while the sum is 35.

The square root of 1228538222 is about 35050.5095826009. The cubic root of 1228538222 is about 1071.0166544784.

The spelling of 1228538222 in words is "one billion, two hundred twenty-eight million, five hundred thirty-eight thousand, two hundred twenty-two".