21003230012 has 24 divisors (see below), whose sum is σ = 37352984592. Its totient is φ = 10332000000.

The previous prime is 21003229993. The next prime is 21003230033.

It is a happy number.

21003230012 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21003230012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 51239 + ... + 211262.

It is an arithmetic number, because the mean of its divisors is an integer number (1556374358).

Almost surely, 2^21003230012 is an apocalyptic number.

It is an amenable number.

21003230012 is a deficient number, since it is larger than the sum of its proper divisors (16349754580).

21003230012 is a wasteful number, since it uses less digits than its factorization.

21003230012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262829 (or 262827 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The spelling of 21003230012 in words is "twenty-one billion, three million, two hundred thirty thousand, twelve".