1125231243213 has 48 divisors (see below), whose sum is σ = 1955377138176. Its totient is φ = 559121053920.

The previous prime is 1125231243211. The next prime is 1125231243217. The reversal of 1125231243213 is 3123421325211.

It is not a de Polignac number, because 1125231243213 - 2¹ = 1125231243211 is a prime.

It is a super-2 number, since 2×1125231243213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125231243211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4481895 + ... + 4726292.

It is an arithmetic number, because the mean of its divisors is an integer number (40737023712).

Almost surely, 2^{1125231243213} is an apocalyptic number.

It is an amenable number.

1125231243213 is a deficient number, since it is larger than the sum of its proper divisors (830145894963).

1125231243213 is a wasteful number, since it uses less digits than its factorization.

1125231243213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208254 (or 9208231 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

Adding to 1125231243213 its reverse (3123421325211), we get a palindrome (4248652568424).

The spelling of 1125231243213 in words is "one trillion, one hundred twenty-five billion, two hundred thirty-one million, two hundred forty-three thousand, two hundred thirteen".