221236809145343 has 24 divisors (see below), whose sum is σ = 242785064522880. Its totient is φ = 201351184750080.

The previous prime is 221236809145307. The next prime is 221236809145409. The reversal of 221236809145343 is 343541908632122.

It is not a de Polignac number, because 221236809145343 - 2¹⁰ = 221236809144319 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221236809145843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70617098 + ... + 73683431.

It is an arithmetic number, because the mean of its divisors is an integer number (10116044355120).

Almost surely, 2^{221236809145343} is an apocalyptic number.

221236809145343 is a deficient number, since it is larger than the sum of its proper divisors (21548255377537).

221236809145343 is a wasteful number, since it uses less digits than its factorization.

221236809145343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144300735 (or 144300716 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 221236809145343 in words is "two hundred twenty-one trillion, two hundred thirty-six billion, eight hundred nine million, one hundred forty-five thousand, three hundred forty-three".