1252212312 has 128 divisors (see below), whose sum is σ = 3516307200. Its totient is φ = 369059328.

The previous prime is 1252212293. The next prime is 1252212319. The reversal of 1252212312 is 2132122521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252212319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772639 + ... + 774257.

It is an arithmetic number, because the mean of its divisors is an integer number (27471150).

Almost surely, 2^1252212312 is an apocalyptic number.

1252212312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252212312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758153600).

1252212312 is an abundant number, since it is smaller than the sum of its proper divisors (2264094888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252212312 is a wasteful number, since it uses less digits than its factorization.

1252212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1741 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 1252212312 is about 35386.6120446702. The cubic root of 1252212312 is about 1077.8524746976.

Adding to 1252212312 its reverse (2132122521), we get a palindrome (3384334833).

The spelling of 1252212312 in words is "one billion, two hundred fifty-two million, two hundred twelve thousand, three hundred twelve".