21226043500005 has 64 divisors (see below), whose sum is σ = 34500800655360. Its totient is φ = 11141423193600.

The previous prime is 21226043499979. The next prime is 21226043500049. The reversal of 21226043500005 is 50000534062212.

It is not a de Polignac number, because 21226043500005 - 2⁷ = 21226043499877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2401403376 + ... + 2401412214.

It is an arithmetic number, because the mean of its divisors is an integer number (539075010240).

Almost surely, 2^{21226043500005} is an apocalyptic number.

It is an amenable number.

21226043500005 is a deficient number, since it is larger than the sum of its proper divisors (13274757155355).

21226043500005 is a wasteful number, since it uses less digits than its factorization.

21226043500005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12642.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21226043500005 its reverse (50000534062212), we get a palindrome (71226577562217).

The spelling of 21226043500005 in words is "twenty-one trillion, two hundred twenty-six billion, forty-three million, five hundred thousand, five".