21003012014 has 32 divisors (see below), whose sum is σ = 32274118656. Its totient is φ = 10248919200.

The previous prime is 21003012007. The next prime is 21003012031. The reversal of 21003012014 is 41021030012.

It is a super-2 number, since 2×21003012014² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21003012014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4720739 + ... + 4725185.

It is an arithmetic number, because the mean of its divisors is an integer number (1008566208).

Almost surely, 2^21003012014 is an apocalyptic number.

21003012014 is a deficient number, since it is larger than the sum of its proper divisors (11271106642).

21003012014 is a wasteful number, since it uses less digits than its factorization.

21003012014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21003012014 its reverse (41021030012), we get a palindrome (62024042026).

The spelling of 21003012014 in words is "twenty-one billion, three million, twelve thousand, fourteen".