1001222228 has 12 divisors (see below), whose sum is σ = 1752364992. Its totient is φ = 500546520.

The previous prime is 1001222227. The next prime is 1001222231. The reversal of 1001222228 is 8222221001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001222227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41951 + ... + 61337.

It is an arithmetic number, because the mean of its divisors is an integer number (146030416).

Almost surely, 2^1001222228 is an apocalyptic number.

It is an amenable number.

1001222228 is a deficient number, since it is larger than the sum of its proper divisors (751142764).

1001222228 is a wasteful number, since it uses less digits than its factorization.

1001222228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32302 (or 32300 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1001222228 is about 31642.0958218636. The cubic root of 1001222228 is about 1000.4072434636.

Adding to 1001222228 its reverse (8222221001), we get a palindrome (9223443229).

The spelling of 1001222228 in words is "one billion, one million, two hundred twenty-two thousand, two hundred twenty-eight".