1212253712 has 20 divisors (see below), whose sum is σ = 2371999596. Its totient is φ = 600124800.

The previous prime is 1212253711. The next prime is 1212253727. The reversal of 1212253712 is 2173522121.

It can be written as a sum of positive squares in 2 ways, for example, as 1160356096 + 51897616 = 34064^2 + 7204^2 .

It is not an unprimeable number, because it can be changed into a prime (1212253711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373463 + ... + 376694.

Almost surely, 2^1212253712 is an apocalyptic number.

It is an amenable number.

1212253712 is a deficient number, since it is larger than the sum of its proper divisors (1159745884).

1212253712 is a wasteful number, since it uses less digits than its factorization.

1212253712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750266 (or 750260 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 1212253712 is about 34817.4340237761. The cubic root of 1212253712 is about 1066.2634133679.

Adding to 1212253712 its reverse (2173522121), we get a palindrome (3385775833).

The spelling of 1212253712 in words is "one billion, two hundred twelve million, two hundred fifty-three thousand, seven hundred twelve".