2100550105552 has 20 divisors (see below), whose sum is σ = 4136534123716. Its totient is φ = 1033057428480.

The previous prime is 2100550105517. The next prime is 2100550105553. The reversal of 2100550105552 is 2555010550012.

It can be written as a sum of positive squares in 2 ways, for example, as 490554556816 + 1609995548736 = 700396^2 + 1268856^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100550105553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076100513 + ... + 1076102464.

Almost surely, 2^{2100550105552} is an apocalyptic number.

It is an amenable number.

2100550105552 is a deficient number, since it is larger than the sum of its proper divisors (2035984018164).

2100550105552 is a wasteful number, since it uses less digits than its factorization.

2100550105552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152203046 (or 2152203040 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 31.

Adding to 2100550105552 its reverse (2555010550012), we get a palindrome (4655560655564).

The spelling of 2100550105552 in words is "two trillion, one hundred billion, five hundred fifty million, one hundred five thousand, five hundred fifty-two".