1022220228 has 24 divisors (see below), whose sum is σ = 2418776640. Its totient is φ = 335940640.

The previous prime is 1022220223. The next prime is 1022220233. The reversal of 1022220228 is 8220222201.

It is an interprime number because it is at equal distance from previous prime (1022220223) and next prime (1022220233).

It is not an unprimeable number, because it can be changed into a prime (1022220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599043 + ... + 600746.

It is an arithmetic number, because the mean of its divisors is an integer number (100782360).

Almost surely, 2^1022220228 is an apocalyptic number.

It is an amenable number.

1022220228 is an abundant number, since it is smaller than the sum of its proper divisors (1396556412).

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

1022220228 is a wasteful number, since it uses less digits than its factorization.

1022220228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199867 (or 1199865 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1022220228 is about 31972.1789685971. The cubic root of 1022220228 is about 1007.3525501796.

Adding to 1022220228 its reverse (8220222201), we get a palindrome (9242442429).

The spelling of 1022220228 in words is "one billion, twenty-two million, two hundred twenty thousand, two hundred twenty-eight".