1210231321133 has 4 divisors (see below), whose sum is σ = 1210237770720. Its totient is φ = 1210224871548.

The previous prime is 1210231321081. The next prime is 1210231321181. The reversal of 1210231321133 is 3311231320121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1210231321133 - 2¹² = 1210231317037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210231321099 and 1210231321108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210231321193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2934623 + ... + 3321516.

It is an arithmetic number, because the mean of its divisors is an integer number (302559442680).

Almost surely, 2^{1210231321133} is an apocalyptic number.

It is an amenable number.

1210231321133 is a deficient number, since it is larger than the sum of its proper divisors (6449587).

1210231321133 is an equidigital number, since it uses as much as digits as its factorization.

1210231321133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6449586.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1210231321133 its reverse (3311231320121), we get a palindrome (4521462641254).

The spelling of 1210231321133 in words is "one trillion, two hundred ten billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty-three".