1321231230133 has 6 divisors (see below), whose sum is σ = 1326926141954. Its totient is φ = 1315560655776.

The previous prime is 1321231230107. The next prime is 1321231230157. The reversal of 1321231230133 is 3310321321231.

It can be written as a sum of positive squares in 3 ways, for example, as 32465913489 + 1288765316644 = 180183^2 + 1135238^2 .

It is not a de Polignac number, because 1321231230133 - 2²⁵ = 1321197675701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321231230098 and 1321231230107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321231230733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12114210 + ... + 12222787.

Almost surely, 2^{1321231230133} is an apocalyptic number.

It is an amenable number.

1321231230133 is a deficient number, since it is larger than the sum of its proper divisors (5694911821).

1321231230133 is an frugal number, since it uses more digits than its factorization.

1321231230133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24337463 (or 24337230 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1321231230133 its reverse (3310321321231), we get a palindrome (4631552551364).

The spelling of 1321231230133 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-one million, two hundred thirty thousand, one hundred thirty-three".