1212044072 has 8 divisors (see below), whose sum is σ = 2272582650. Its totient is φ = 606022032.

The previous prime is 1212044063. The next prime is 1212044077. The reversal of 1212044072 is 2704402121.

It can be written as a sum of positive squares in only one way, i.e., 1185149476 + 26894596 = 34426^2 + 5186^2 .

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 (1212044077) 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 as a sum of consecutive naturals, namely, 75752747 + ... + 75752762.

Almost surely, 2^1212044072 is an apocalyptic number.

It is an amenable number.

1212044072 is a deficient number, since it is larger than the sum of its proper divisors (1060538578).

1212044072 is a wasteful number, since it uses less digits than its factorization.

1212044072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151505515 (or 151505511 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 1212044072 is about 34814.4233328659. The cubic root of 1212044072 is about 1066.2019453913.

Adding to 1212044072 its reverse (2704402121), we get a palindrome (3916446193).

The spelling of 1212044072 in words is "one billion, two hundred twelve million, forty-four thousand, seventy-two".