1220203204 has 18 divisors (see below), whose sum is σ = 2347127342. Its totient is φ = 554637600.

The previous prime is 1220203181. The next prime is 1220203211. The reversal of 1220203204 is 4023020221.

It can be written as a sum of positive squares in only one way, i.e., 1118233600 + 101969604 = 33440^2 + 10098^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1260057 + ... + 1261024.

Almost surely, 2^1220203204 is an apocalyptic number.

It is an amenable number.

1220203204 is a deficient number, since it is larger than the sum of its proper divisors (1126924138).

1220203204 is a wasteful number, since it uses less digits than its factorization.

1220203204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521107 (or 2521094 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1220203204 is about 34931.4071288289. The cubic root of 1220203204 is about 1068.5890518596.

Adding to 1220203204 its reverse (4023020221), we get a palindrome (5243223425).

The spelling of 1220203204 in words is "one billion, two hundred twenty million, two hundred three thousand, two hundred four".