1212725330 has 16 divisors (see below), whose sum is σ = 2224093464. Its totient is φ = 475937280.

The previous prime is 1212725317. The next prime is 1212725333. The reversal of 1212725330 is 335272121.

It can be written as a sum of positive squares in 4 ways, for example, as 775455409 + 437269921 = 27847^2 + 20911^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1212725330.

It is not an unprimeable number, because it can be changed into a prime (1212725333) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1143551 + ... + 1144610.

Almost surely, 2^1212725330 is an apocalyptic number.

1212725330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212725330 is a deficient number, since it is larger than the sum of its proper divisors (1011368134).

1212725330 is a wasteful number, since it uses less digits than its factorization.

1212725330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288221.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1212725330 is about 34824.2060928889. The cubic root of 1212725330 is about 1066.4016693054.

Adding to 1212725330 its reverse (335272121), we get a palindrome (1547997451).

The spelling of 1212725330 in words is "one billion, two hundred twelve million, seven hundred twenty-five thousand, three hundred thirty".