1212211304 has 8 divisors (see below), whose sum is σ = 2272896210. Its totient is φ = 606105648.

The previous prime is 1212211291. The next prime is 1212211307. The reversal of 1212211304 is 4031122121.

It can be written as a sum of positive squares in only one way, i.e., 1199236900 + 12974404 = 34630^2 + 3602^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1212211307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75763199 + ... + 75763214.

Almost surely, 2^1212211304 is an apocalyptic number.

It is an amenable number.

1212211304 is a deficient number, since it is larger than the sum of its proper divisors (1060684906).

1212211304 is a wasteful number, since it uses less digits than its factorization.

1212211304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151526419 (or 151526415 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1212211304 is about 34816.8250132030. The cubic root of 1212211304 is about 1066.2509796049.

Adding to 1212211304 its reverse (4031122121), we get a palindrome (5243333425).

The spelling of 1212211304 in words is "one billion, two hundred twelve million, two hundred eleven thousand, three hundred four".