1212303204 has 36 divisors (see below), whose sum is σ = 3502209984. Its totient is φ = 346372272.

The previous prime is 1212303199. The next prime is 1212303221. The reversal of 1212303204 is 4023032121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2405112 + ... + 2405615.

Almost surely, 2^1212303204 is an apocalyptic number.

1212303204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1212303204 is an abundant number, since it is smaller than the sum of its proper divisors (2289906780).

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

1212303204 is a wasteful number, since it uses less digits than its factorization.

1212303204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810744 (or 4810739 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1212303204 is about 34818.1447524132. The cubic root of 1212303204 is about 1066.2779237492.

Adding to 1212303204 its reverse (4023032121), we get a palindrome (5235335325).

The spelling of 1212303204 in words is "one billion, two hundred twelve million, three hundred three thousand, two hundred four".