53210631023221 has 16 divisors (see below), whose sum is σ = 66466410347520. Its totient is φ = 41541506461440.

The previous prime is 53210631023161. The next prime is 53210631023293. The reversal of 53210631023221 is 12232013601235.

It is a cyclic number.

It is not a de Polignac number, because 53210631023221 - 2¹¹ = 53210631021173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53210631023521) by changing a digit.

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, 7212063406 + ... + 7212070783.

It is an arithmetic number, because the mean of its divisors is an integer number (4154150646720).

Almost surely, 2^{53210631023221} is an apocalyptic number.

It is an amenable number.

53210631023221 is a deficient number, since it is larger than the sum of its proper divisors (13255779324299).

53210631023221 is a wasteful number, since it uses less digits than its factorization.

53210631023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14424134244.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 53210631023221 its reverse (12232013601235), we get a palindrome (65442644624456).

The spelling of 53210631023221 in words is "fifty-three trillion, two hundred ten billion, six hundred thirty-one million, twenty-three thousand, two hundred twenty-one".