10555020543121 has 4 divisors (see below), whose sum is σ = 10559803064832. Its totient is φ = 10550238021412.

The previous prime is 10555020543097. The next prime is 10555020543139. The reversal of 10555020543121 is 12134502055501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10555020543121 - 2²³ = 10555012154513 is a prime.

It is a super-2 number, since 2×10555020543121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10555020543191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2391257545 + ... + 2391261958.

It is an arithmetic number, because the mean of its divisors is an integer number (2639950766208).

Almost surely, 2^{10555020543121} is an apocalyptic number.

It is an amenable number.

10555020543121 is a deficient number, since it is larger than the sum of its proper divisors (4782521711).

10555020543121 is an equidigital number, since it uses as much as digits as its factorization.

10555020543121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782521710.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 10555020543121 its reverse (12134502055501), we get a palindrome (22689522598622).

The spelling of 10555020543121 in words is "ten trillion, five hundred fifty-five billion, twenty million, five hundred forty-three thousand, one hundred twenty-one".