243141214221 has 12 divisors (see below), whose sum is σ = 351208297440. Its totient is φ = 162092148360.

The previous prime is 243141214219. The next prime is 243141214237. The reversal of 243141214221 is 122412141342.

243141214221 is a `hidden beast` number, since 2 + 4 + 314 + 121 + 4 + 221 = 666.

It is not a de Polignac number, because 243141214221 - 2¹ = 243141214219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243141214271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1178416 + ... + 1369286.

It is an arithmetic number, because the mean of its divisors is an integer number (29267358120).

Almost surely, 2^243141214221 is an apocalyptic number.

It is an amenable number.

243141214221 is a deficient number, since it is larger than the sum of its proper divisors (108067083219).

243141214221 is a wasteful number, since it uses less digits than its factorization.

243141214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332416 (or 332413 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 243141214221 its reverse (122412141342), we get a palindrome (365553355563).

The spelling of 243141214221 in words is "two hundred forty-three billion, one hundred forty-one million, two hundred fourteen thousand, two hundred twenty-one".