21310003012 has 24 divisors (see below), whose sum is σ = 38631579392. Its totient is φ = 10274839200.

The previous prime is 21310002991. The next prime is 21310003019. The reversal of 21310003012 is 21030001312.

It is a junction number, because it is equal to n+sod(n) for n = 21310002983 and 21310003001.

It is not an unprimeable number, because it can be changed into a prime (21310003019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268539 + ... + 338722.

Almost surely, 2^21310003012 is an apocalyptic number.

It is an amenable number.

21310003012 is a deficient number, since it is larger than the sum of its proper divisors (17321576380).

21310003012 is a wasteful number, since it uses less digits than its factorization.

21310003012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607579 (or 607577 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21310003012 its reverse (21030001312), we get a palindrome (42340004324).

The spelling of 21310003012 in words is "twenty-one billion, three hundred ten million, three thousand, twelve".