21413311012 has 24 divisors (see below), whose sum is σ = 37725571520. Its totient is φ = 10634626080.

The previous prime is 21413310949. The next prime is 21413311013. The reversal of 21413311012 is 21011331412.

It is not an unprimeable number, because it can be changed into a prime (21413311013) 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, 2653039 + ... + 2661097.

Almost surely, 2^21413311012 is an apocalyptic number.

It is an amenable number.

21413311012 is a deficient number, since it is larger than the sum of its proper divisors (16312260508).

21413311012 is a wasteful number, since it uses less digits than its factorization.

21413311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12451 (or 12449 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21413311012 its reverse (21011331412), we get a palindrome (42424642424).

The spelling of 21413311012 in words is "twenty-one billion, four hundred thirteen million, three hundred eleven thousand, twelve".