243622616221 has 8 divisors (see below), whose sum is σ = 263375802080. Its totient is φ = 224562524688.

The previous prime is 243622616219. The next prime is 243622616231. The reversal of 243622616221 is 122616226342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243622616221 - 2¹ = 243622616219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243622616231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173272851 + ... + 173274256.

It is an arithmetic number, because the mean of its divisors is an integer number (32921975260).

Almost surely, 2^243622616221 is an apocalyptic number.

It is an amenable number.

243622616221 is a deficient number, since it is larger than the sum of its proper divisors (19753185859).

243622616221 is a wasteful number, since it uses less digits than its factorization.

243622616221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346547163.

The product of its digits is 82944, while the sum is 37.

The spelling of 243622616221 in words is "two hundred forty-three billion, six hundred twenty-two million, six hundred sixteen thousand, two hundred twenty-one".