1231223102133 has 16 divisors (see below), whose sum is σ = 1645345445376. Its totient is φ = 818959181040.

The previous prime is 1231223102099. The next prime is 1231223102143. The reversal of 1231223102133 is 3312013221321.

It is not a de Polignac number, because 1231223102133 - 2⁸ = 1231223101877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231223102143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4393798 + ... + 4665608.

It is an arithmetic number, because the mean of its divisors is an integer number (102834090336).

Almost surely, 2^{1231223102133} is an apocalyptic number.

It is an amenable number.

1231223102133 is a deficient number, since it is larger than the sum of its proper divisors (414122343243).

1231223102133 is a wasteful number, since it uses less digits than its factorization.

1231223102133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275224.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231223102133 its reverse (3312013221321), we get a palindrome (4543236323454).

The spelling of 1231223102133 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-three million, one hundred two thousand, one hundred thirty-three".