1221103230 has 32 divisors (see below), whose sum is σ = 3009857184. Its totient is φ = 316826496.

The previous prime is 1221103223. The next prime is 1221103241. The reversal of 1221103230 is 323011221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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, 548937 + ... + 551156.

It is an arithmetic number, because the mean of its divisors is an integer number (94058037).

Almost surely, 2^1221103230 is an apocalyptic number.

1221103230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221103230 is an abundant number, since it is smaller than the sum of its proper divisors (1788753954).

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

1221103230 is a wasteful number, since it uses less digits than its factorization.

1221103230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100140.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1221103230 is about 34944.2875159875. The cubic root of 1221103230 is about 1068.8517189188.

Adding to 1221103230 its reverse (323011221), we get a palindrome (1544114451).

The spelling of 1221103230 in words is "one billion, two hundred twenty-one million, one hundred three thousand, two hundred thirty".