21100211311130 has 48 divisors (see below), whose sum is σ = 44208719268840. Its totient is φ = 7229861710848.

The previous prime is 21100211311079. The next prime is 21100211311159. The reversal of 21100211311130 is 3111311200112.

It can be written as a sum of positive squares in 4 ways, for example, as 20736466020361 + 363745290769 = 4553731^2 + 603113^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21100211311099 and 21100211311108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12593087 + ... + 14169906.

Almost surely, 2^{21100211311130} is an apocalyptic number.

21100211311130 is an abundant number, since it is smaller than the sum of its proper divisors (23108507957710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21100211311130 is a wasteful number, since it uses less digits than its factorization.

21100211311130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26764623 (or 26764616 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 21100211311130 its reverse (3111311200112), we get a palindrome (24211522511242).

The spelling of 21100211311130 in words is "twenty-one trillion, one hundred billion, two hundred eleven million, three hundred eleven thousand, one hundred thirty".