1322220228 has 48 divisors (see below), whose sum is σ = 3679226880. Its totient is φ = 361351584.

The previous prime is 1322220227. The next prime is 1322220233. The reversal of 1322220228 is 8220222231.

It is a junction number, because it is equal to n+sod(n) for n = 1322220198 and 1322220207.

It is not an unprimeable number, because it can be changed into a prime (1322220227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340258 + ... + 344121.

It is an arithmetic number, because the mean of its divisors is an integer number (76650560).

Almost surely, 2^1322220228 is an apocalyptic number.

It is an amenable number.

1322220228 is an abundant number, since it is smaller than the sum of its proper divisors (2357006652).

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

1322220228 is a wasteful number, since it uses less digits than its factorization.

1322220228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684416 (or 684414 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1322220228 is about 36362.3462939343. The cubic root of 1322220228 is about 1097.5759923028.

Adding to 1322220228 its reverse (8220222231), we get a palindrome (9542442459).

The spelling of 1322220228 in words is "one billion, three hundred twenty-two million, two hundred twenty thousand, two hundred twenty-eight".