1230221000 has 64 divisors (see below), whose sum is σ = 2901000960. Its totient is φ = 488280000.

The previous prime is 1230220993. The next prime is 1230221017. The reversal of 1230221000 is 1220321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126305 + ... + 135695.

It is an arithmetic number, because the mean of its divisors is an integer number (45328140).

Almost surely, 2^1230221000 is an apocalyptic number.

1230221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450500480).

1230221000 is an abundant number, since it is smaller than the sum of its proper divisors (1670779960).

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

1230221000 is a wasteful number, since it uses less digits than its factorization.

1230221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543 (or 9529 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1230221000 is about 35074.5064113524. The cubic root of 1230221000 is about 1071.5054361787.

Adding to 1230221000 its reverse (1220321), we get a palindrome (1231441321).

The spelling of 1230221000 in words is "one billion, two hundred thirty million, two hundred twenty-one thousand".