1256132212 has 12 divisors (see below), whose sum is σ = 2293806816. Its totient is φ = 600758840.

The previous prime is 1256132179. The next prime is 1256132219. The reversal of 1256132212 is 2122316521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256132219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6826714 + ... + 6826897.

It is an arithmetic number, because the mean of its divisors is an integer number (191150568).

Almost surely, 2^1256132212 is an apocalyptic number.

It is an amenable number.

1256132212 is a deficient number, since it is larger than the sum of its proper divisors (1037674604).

1256132212 is a wasteful number, since it uses less digits than its factorization.

1256132212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13653638 (or 13653636 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 1256132212 is about 35441.9555329556. The cubic root of 1256132212 is about 1078.9759989943.

Adding to 1256132212 its reverse (2122316521), we get a palindrome (3378448733).

The spelling of 1256132212 in words is "one billion, two hundred fifty-six million, one hundred thirty-two thousand, two hundred twelve".