1212065552 has 20 divisors (see below), whose sum is σ = 2348932620. Its totient is φ = 605889408.

The previous prime is 1212065551. The next prime is 1212065557. The reversal of 1212065552 is 2555602121.

It can be written as a sum of positive squares in 2 ways, for example, as 845879056 + 366186496 = 29084^2 + 19136^2 .

It is not an unprimeable number, because it can be changed into a prime (1212065551) 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, 103718 + ... + 114810.

It is an arithmetic number, because the mean of its divisors is an integer number (117446631).

Almost surely, 2^1212065552 is an apocalyptic number.

It is an amenable number.

1212065552 is a deficient number, since it is larger than the sum of its proper divisors (1136867068).

1212065552 is a wasteful number, since it uses less digits than its factorization.

1212065552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17930 (or 17924 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1212065552 is about 34814.7318243298. The cubic root of 1212065552 is about 1066.2082438098.

Adding to 1212065552 its reverse (2555602121), we get a palindrome (3767667673).

The spelling of 1212065552 in words is "one billion, two hundred twelve million, sixty-five thousand, five hundred fifty-two".