21131011130 has 16 divisors (see below), whose sum is σ = 38065079304. Its totient is φ = 8445902400.

The previous prime is 21131011123. The next prime is 21131011141. The reversal of 21131011130 is 3111013112.

It is a happy number.

21131011130 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6624494881 + 14506516249 = 81391^2 + 120443^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799097 + ... + 825116.

Almost surely, 2^21131011130 is an apocalyptic number.

21131011130 is a deficient number, since it is larger than the sum of its proper divisors (16934068174).

21131011130 is a wasteful number, since it uses less digits than its factorization.

21131011130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625521.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 21131011130 its reverse (3111013112), we get a palindrome (24242024242).

The spelling of 21131011130 in words is "twenty-one billion, one hundred thirty-one million, eleven thousand, one hundred thirty".