1231332021133 has 8 divisors (see below), whose sum is σ = 1248962950080. Its totient is φ = 1213709098560.

The previous prime is 1231332021121. The next prime is 1231332021167. The reversal of 1231332021133 is 3311202331321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231332021133 - 2²¹ = 1231329923981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231332021098 and 1231332021107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231332021233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1691463 + ... + 2307316.

It is an arithmetic number, because the mean of its divisors is an integer number (156120368760).

Almost surely, 2^{1231332021133} is an apocalyptic number.

It is an amenable number.

1231332021133 is a deficient number, since it is larger than the sum of its proper divisors (17630928947).

1231332021133 is an equidigital number, since it uses as much as digits as its factorization.

1231332021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003187.

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

Adding to 1231332021133 its reverse (3311202331321), we get a palindrome (4542534352454).

The spelling of 1231332021133 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-two million, twenty-one thousand, one hundred thirty-three".