1212133204 has 12 divisors (see below), whose sum is σ = 2122967700. Its totient is φ = 605571008.

The previous prime is 1212133199. The next prime is 1212133211. The reversal of 1212133204 is 4023312121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 989228304 + 222904900 = 31452^2 + 14930^2 .

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 3 ways as a sum of consecutive naturals, for example, 118369 + ... + 128200.

It is an arithmetic number, because the mean of its divisors is an integer number (176913975).

Almost surely, 2^1212133204 is an apocalyptic number.

It is an amenable number.

1212133204 is a deficient number, since it is larger than the sum of its proper divisors (910834496).

1212133204 is a wasteful number, since it uses less digits than its factorization.

1212133204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247802 (or 247800 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1212133204 is about 34815.7034109610. The cubic root of 1212133204 is about 1066.2280804097.

Adding to 1212133204 its reverse (4023312121), we get a palindrome (5235445325).

The spelling of 1212133204 in words is "one billion, two hundred twelve million, one hundred thirty-three thousand, two hundred four".