21140244222235 has 64 divisors (see below), whose sum is σ = 26270057189376. Its totient is φ = 16323862464000.

The previous prime is 21140244222179. The next prime is 21140244222247. The reversal of 21140244222235 is 53222244204112.

It is not a de Polignac number, because 21140244222235 - 2¹¹ = 21140244220187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21140244222235.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3408064644 + ... + 3408070846.

It is an arithmetic number, because the mean of its divisors is an integer number (410469643584).

Almost surely, 2^{21140244222235} is an apocalyptic number.

21140244222235 is a deficient number, since it is larger than the sum of its proper divisors (5129812967141).

21140244222235 is a wasteful number, since it uses less digits than its factorization.

21140244222235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156.

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 21140244222235 its reverse (53222244204112), we get a palindrome (74362488426347).

The spelling of 21140244222235 in words is "twenty-one trillion, one hundred forty billion, two hundred forty-four million, two hundred twenty-two thousand, two hundred thirty-five".