13021000233121 has 2 divisors, whose sum is σ = 13021000233122. Its totient is φ = 13021000233120.

The previous prime is 13021000232983. The next prime is 13021000233127. The reversal of 13021000233121 is 12133200012031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10703131006096 + 2317869227025 = 3271564^2 + 1522455^2 .

It is a cyclic number.

It is not a de Polignac number, because 13021000233121 - 2¹⁹ = 13020999708833 is a prime.

It is not a weakly prime, because it can be changed into another prime (13021000233127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510500116560 + 6510500116561.

It is an arithmetic number, because the mean of its divisors is an integer number (6510500116561).

Almost surely, 2^{13021000233121} is an apocalyptic number.

It is an amenable number.

13021000233121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021000233121 is an equidigital number, since it uses as much as digits as its factorization.

13021000233121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13021000233121 its reverse (12133200012031), we get a palindrome (25154200245152).

The spelling of 13021000233121 in words is "thirteen trillion, twenty-one billion, two hundred thirty-three thousand, one hundred twenty-one".