21100331311130 has 16 divisors (see below), whose sum is σ = 37988520626664. Its totient is φ = 8438371576320.

The previous prime is 21100331311063. The next prime is 21100331311139. The reversal of 21100331311130 is 3111313300112.

It can be written as a sum of positive squares in 4 ways, for example, as 13932026548969 + 7168304762161 = 3732563^2 + 2677369^2 .

It is not an unprimeable number, because it can be changed into a prime (21100331311139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220068191 + ... + 220164050.

Almost surely, 2^{21100331311130} is an apocalyptic number.

21100331311130 is a deficient number, since it is larger than the sum of its proper divisors (16888189315534).

21100331311130 is a wasteful number, since it uses less digits than its factorization.

21100331311130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440237041.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 21100331311130 its reverse (3111313300112), we get a palindrome (24211644611242).

The spelling of 21100331311130 in words is "twenty-one trillion, one hundred billion, three hundred thirty-one million, three hundred eleven thousand, one hundred thirty".