10520245121 has 2 divisors, whose sum is σ = 10520245122. Its totient is φ = 10520245120.

The previous prime is 10520245091. The next prime is 10520245129. The reversal of 10520245121 is 12154202501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10498051600 + 22193521 = 102460^2 + 4711^2 .

It is a cyclic number.

It is not a de Polignac number, because 10520245121 - 2²² = 10516050817 is a prime.

It is a super-2 number, since 2×10520245121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10520245129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260122560 + 5260122561.

It is an arithmetic number, because the mean of its divisors is an integer number (5260122561).

Almost surely, 2^10520245121 is an apocalyptic number.

It is an amenable number.

10520245121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10520245121 is an equidigital number, since it uses as much as digits as its factorization.

10520245121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 10520245121 its reverse (12154202501), we get a palindrome (22674447622).

The spelling of 10520245121 in words is "ten billion, five hundred twenty million, two hundred forty-five thousand, one hundred twenty-one".