12102021221033 has 4 divisors (see below), whose sum is σ = 12102193564500. Its totient is φ = 12101848877568.

The previous prime is 12102021221021. The next prime is 12102021221039. The reversal of 12102021221033 is 33012212020121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2484002949184 + 9618018271849 = 1576072^2 + 3101293^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102021221033 - 2²⁰ = 12102020172457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102021220996 and 12102021221014.

It is not an unprimeable number, because it can be changed into a prime (12102021221039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86066360 + ... + 86206857.

It is an arithmetic number, because the mean of its divisors is an integer number (3025548391125).

Almost surely, 2^{12102021221033} is an apocalyptic number.

It is an amenable number.

12102021221033 is a deficient number, since it is larger than the sum of its proper divisors (172343467).

12102021221033 is an equidigital number, since it uses as much as digits as its factorization.

12102021221033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172343466.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12102021221033 its reverse (33012212020121), we get a palindrome (45114233241154).

The spelling of 12102021221033 in words is "twelve trillion, one hundred two billion, twenty-one million, two hundred twenty-one thousand, thirty-three".