21001460012 has 96 divisors (see below), whose sum is σ = 42091467264. Its totient is φ = 9099417600.

The previous prime is 21001460003. The next prime is 21001460047. The reversal of 21001460012 is 21006410012.

It is a super-2 number, since 2×21001460012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13019318 + ... + 13020930.

It is an arithmetic number, because the mean of its divisors is an integer number (438452784).

Almost surely, 2^21001460012 is an apocalyptic number.

It is an amenable number.

21001460012 is an abundant number, since it is smaller than the sum of its proper divisors (21090007252).

21001460012 is a wasteful number, since it uses less digits than its factorization.

21001460012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21001460012 its reverse (21006410012), we get a palindrome (42007870024).

The spelling of 21001460012 in words is "twenty-one billion, one million, four hundred sixty thousand, twelve".