13121312023033 has 4 divisors (see below), whose sum is σ = 13573771058340. Its totient is φ = 12668852987728.

The previous prime is 13121312022983. The next prime is 13121312023073. The reversal of 13121312023033 is 33032021312131.

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 4405431583744 + 8715880439289 = 2098912^2 + 2952267^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121312023033 - 2²¹ = 13121309925881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121312022989 and 13121312023007.

It is not an unprimeable number, because it can be changed into a prime (13121312023073) 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, 226229517610 + ... + 226229517667.

It is an arithmetic number, because the mean of its divisors is an integer number (3393442764585).

Almost surely, 2^{13121312023033} is an apocalyptic number.

It is an amenable number.

13121312023033 is a deficient number, since it is larger than the sum of its proper divisors (452459035307).

13121312023033 is an equidigital number, since it uses as much as digits as its factorization.

13121312023033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452459035306.

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

Adding to 13121312023033 its reverse (33032021312131), we get a palindrome (46153333335164).

The spelling of 13121312023033 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twelve million, twenty-three thousand, thirty-three".