243132221245 has 8 divisors (see below), whose sum is σ = 292868015616. Its totient is φ = 193766210256.

The previous prime is 243132221219. The next prime is 243132221251. The reversal of 243132221245 is 542122231342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243132221245 - 2⁹ = 243132220733 is a prime.

It is a super-2 number, since 2×243132221245² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92444397 + ... + 92447026.

It is an arithmetic number, because the mean of its divisors is an integer number (36608501952).

Almost surely, 2^243132221245 is an apocalyptic number.

It is an amenable number.

243132221245 is a deficient number, since it is larger than the sum of its proper divisors (49735794371).

243132221245 is a wasteful number, since it uses less digits than its factorization.

243132221245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184891691.

The product of its digits is 23040, while the sum is 31.

Adding to 243132221245 its reverse (542122231342), we get a palindrome (785254452587).

The spelling of 243132221245 in words is "two hundred forty-three billion, one hundred thirty-two million, two hundred twenty-one thousand, two hundred forty-five".