10520425123321 has 2 divisors, whose sum is σ = 10520425123322. Its totient is φ = 10520425123320.

The previous prime is 10520425123301. The next prime is 10520425123363. The reversal of 10520425123321 is 12332152402501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9792925303225 + 727499820096 = 3129365^2 + 852936^2 .

It is a cyclic number.

It is not a de Polignac number, because 10520425123321 - 2¹³ = 10520425115129 is a prime.

It is a super-2 number, since 2×10520425123321² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10520425123301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260212561660 + 5260212561661.

It is an arithmetic number, because the mean of its divisors is an integer number (5260212561661).

Almost surely, 2^{10520425123321} is an apocalyptic number.

It is an amenable number.

10520425123321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10520425123321 is an equidigital number, since it uses as much as digits as its factorization.

10520425123321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 10520425123321 its reverse (12332152402501), we get a palindrome (22852577525822).

The spelling of 10520425123321 in words is "ten trillion, five hundred twenty billion, four hundred twenty-five million, one hundred twenty-three thousand, three hundred twenty-one".