21310003112 has 8 divisors (see below), whose sum is σ = 39956255850. Its totient is φ = 10655001552.

The previous prime is 21310003069. The next prime is 21310003133. The reversal of 21310003112 is 21130001312.

It can be written as a sum of positive squares in only one way, i.e., 17813173156 + 3496829956 = 133466^2 + 59134^2 .

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, 1331875187 + ... + 1331875202.

Almost surely, 2^21310003112 is an apocalyptic number.

It is an amenable number.

21310003112 is a deficient number, since it is larger than the sum of its proper divisors (18646252738).

21310003112 is a wasteful number, since it uses less digits than its factorization.

21310003112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663750395 (or 2663750391 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21310003112 its reverse (21130001312), we get a palindrome (42440004424).

The spelling of 21310003112 in words is "twenty-one billion, three hundred ten million, three thousand, one hundred twelve".