12121323221033 has 4 divisors (see below), whose sum is σ = 13053732699588. Its totient is φ = 11188913742480.

The previous prime is 12121323221027. The next prime is 12121323221039. The reversal of 12121323221033 is 33012232312121.

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

It is an interprime number because it is at equal distance from previous prime (12121323221027) and next prime (12121323221039).

It can be written as a sum of positive squares in 2 ways, for example, as 4989630127504 + 7131693093529 = 2233748^2 + 2670523^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121323221033 - 2²⁶ = 12121256112169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121323220993 and 12121323221011.

It is not an unprimeable number, because it can be changed into a prime (12121323221039) 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, 466204739258 + ... + 466204739283.

It is an arithmetic number, because the mean of its divisors is an integer number (3263433174897).

Almost surely, 2^{12121323221033} is an apocalyptic number.

12121323221033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12121323221033 is a deficient number, since it is larger than the sum of its proper divisors (932409478555).

12121323221033 is an equidigital number, since it uses as much as digits as its factorization.

12121323221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932409478554.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12121323221033 its reverse (33012232312121), we get a palindrome (45133555533154).

The spelling of 12121323221033 in words is "twelve trillion, one hundred twenty-one billion, three hundred twenty-three million, two hundred twenty-one thousand, thirty-three".