1208221000 has 64 divisors (see below), whose sum is σ = 3231146880. Its totient is φ = 414244800.

The previous prime is 1208220989. The next prime is 1208221031. The reversal of 1208221000 is 1228021.

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 in 15 ways as a sum of consecutive naturals, for example, 79302 + ... + 93301.

It is an arithmetic number, because the mean of its divisors is an integer number (50486670).

Almost surely, 2^1208221000 is an apocalyptic number.

1208221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1208221000 is an abundant number, since it is smaller than the sum of its proper divisors (2022925880).

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

1208221000 is a wasteful number, since it uses less digits than its factorization.

1208221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172631 (or 172617 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1208221000 is about 34759.4735288094. The cubic root of 1208221000 is about 1065.0797474576.

Adding to 1208221000 its reverse (1228021), we get a palindrome (1209449021).

The spelling of 1208221000 in words is "one billion, two hundred eight million, two hundred twenty-one thousand".