21002414012 has 12 divisors (see below), whose sum is σ = 36800931720. Its totient is φ = 10487862096.

The previous prime is 21002414011. The next prime is 21002414071. The reversal of 21002414012 is 21041420012.

It is a super-2 number, since 2×21002414012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002414011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3332687 + ... + 3338982.

It is an arithmetic number, because the mean of its divisors is an integer number (3066744310).

Almost surely, 2^21002414012 is an apocalyptic number.

It is an amenable number.

21002414012 is a deficient number, since it is larger than the sum of its proper divisors (15798517708).

21002414012 is a wasteful number, since it uses less digits than its factorization.

21002414012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672460 (or 6672458 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21002414012 its reverse (21041420012), we get a palindrome (42043834024).

The spelling of 21002414012 in words is "twenty-one billion, two million, four hundred fourteen thousand, twelve".