243121232214 has 192 divisors, whose sum is σ = 666681200640. Its totient is φ = 64903628160.

The previous prime is 243121232171. The next prime is 243121232227. The reversal of 243121232214 is 412232121342.

243121232214 is a `hidden beast` number, since 2 + 4 + 312 + 12 + 322 + 14 = 666.

It is a super-2 number, since 2×243121232214² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3018652 + ... + 3098144.

It is an arithmetic number, because the mean of its divisors is an integer number (3472297920).

Almost surely, 2^243121232214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243121232214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333340600320).

243121232214 is an abundant number, since it is smaller than the sum of its proper divisors (423559968426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243121232214 is a wasteful number, since it uses less digits than its factorization.

243121232214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79577 (or 79565 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 243121232214 its reverse (412232121342), we get a palindrome (655353353556).

The spelling of 243121232214 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred fourteen".