21130303112 has 8 divisors (see below), whose sum is σ = 39619318350. Its totient is φ = 10565151552.

The previous prime is 21130303063. The next prime is 21130303121.

21130303112 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 18067123396 + 3063179716 = 134414^2 + 55346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1320643937 + ... + 1320643952.

Almost surely, 2^21130303112 is an apocalyptic number.

It is an amenable number.

21130303112 is a deficient number, since it is larger than the sum of its proper divisors (18489015238).

21130303112 is a wasteful number, since it uses less digits than its factorization.

21130303112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641287895 (or 2641287891 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The spelling of 21130303112 in words is "twenty-one billion, one hundred thirty million, three hundred three thousand, one hundred twelve".