1220203230 has 16 divisors (see below), whose sum is σ = 2928487824. Its totient is φ = 325387520.

The previous prime is 1220203223. The next prime is 1220203247. The reversal of 1220203230 is 323020221.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20336691 + ... + 20336750.

It is an arithmetic number, because the mean of its divisors is an integer number (183030489).

Almost surely, 2^1220203230 is an apocalyptic number.

1220203230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220203230 is an abundant number, since it is smaller than the sum of its proper divisors (1708284594).

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

1220203230 is a wasteful number, since it uses less digits than its factorization.

1220203230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40673451.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1220203230 is about 34931.4075009868. The cubic root of 1220203230 is about 1068.5890594494.

Adding to 1220203230 its reverse (323020221), we get a palindrome (1543223451).

It can be divided in two parts, 122020 and 3230, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 1220203230 in words is "one billion, two hundred twenty million, two hundred three thousand, two hundred thirty".