21334522340505 has 16 divisors (see below), whose sum is σ = 37238438994624. Its totient is φ = 10344010831680.

The previous prime is 21334522340489. The next prime is 21334522340519. The reversal of 21334522340505 is 50504322543312.

It is not a de Polignac number, because 21334522340505 - 2⁴ = 21334522340489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64650067534 + ... + 64650067863.

It is an arithmetic number, because the mean of its divisors is an integer number (2327402437164).

Almost surely, 2^{21334522340505} is an apocalyptic number.

It is an amenable number.

21334522340505 is a deficient number, since it is larger than the sum of its proper divisors (15903916654119).

21334522340505 is a wasteful number, since it uses less digits than its factorization.

21334522340505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129300135416.

The product of its (nonzero) digits is 432000, while the sum is 39.

Adding to 21334522340505 its reverse (50504322543312), we get a palindrome (71838844883817).

The spelling of 21334522340505 in words is "twenty-one trillion, three hundred thirty-four billion, five hundred twenty-two million, three hundred forty thousand, five hundred five".