1217229204 has 12 divisors (see below), whose sum is σ = 2840201504. Its totient is φ = 405743064.

The previous prime is 1217229203. The next prime is 1217229239. The reversal of 1217229204 is 4029227121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217229203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50717872 + ... + 50717895.

Almost surely, 2^1217229204 is an apocalyptic number.

It is an amenable number.

1217229204 is an abundant number, since it is smaller than the sum of its proper divisors (1622972300).

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

1217229204 is a wasteful number, since it uses less digits than its factorization.

1217229204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101435774 (or 101435772 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1217229204 is about 34888.8120176082. The cubic root of 1217229204 is about 1067.7201885888.

The spelling of 1217229204 in words is "one billion, two hundred seventeen million, two hundred twenty-nine thousand, two hundred four".