21412221413 has 32 divisors (see below), whose sum is σ = 24343787520. Its totient is φ = 18664047360.

The previous prime is 21412221409. The next prime is 21412221421. The reversal of 21412221413 is 31412221412.

It is a cyclic number.

It is not a de Polignac number, because 21412221413 - 2² = 21412221409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412226413) by changing a digit.

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, 10278470 + ... + 10280552.

It is an arithmetic number, because the mean of its divisors is an integer number (760743360).

Almost surely, 2^21412221413 is an apocalyptic number.

It is an amenable number.

21412221413 is a deficient number, since it is larger than the sum of its proper divisors (2931566107).

21412221413 is a wasteful number, since it uses less digits than its factorization.

21412221413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537.

The product of its digits is 768, while the sum is 23.

Adding to 21412221413 its reverse (31412221412), we get a palindrome (52824442825).

Subtracting 21412221413 from its reverse (31412221412), we obtain a palindrome (9999999999).

The spelling of 21412221413 in words is "twenty-one billion, four hundred twelve million, two hundred twenty-one thousand, four hundred thirteen".