10555020543021 has 16 divisors (see below), whose sum is σ = 14087644753920. Its totient is φ = 7029538965360.

The previous prime is 10555020543017. The next prime is 10555020543049. The reversal of 10555020543021 is 12034502055501.

It is not a de Polignac number, because 10555020543021 - 2² = 10555020543017 is a prime.

It is a super-2 number, since 2×10555020543021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10555020543091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83320896 + ... + 83447478.

It is an arithmetic number, because the mean of its divisors is an integer number (880477797120).

Almost surely, 2^{10555020543021} is an apocalyptic number.

It is an amenable number.

10555020543021 is a deficient number, since it is larger than the sum of its proper divisors (3532624210899).

10555020543021 is a wasteful number, since it uses less digits than its factorization.

10555020543021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154576.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 10555020543021 its reverse (12034502055501), we get a palindrome (22589522598522).

The spelling of 10555020543021 in words is "ten trillion, five hundred fifty-five billion, twenty million, five hundred forty-three thousand, twenty-one".