243251105122 has 8 divisors (see below), whose sum is σ = 364893679836. Its totient is φ = 121619878512.

The previous prime is 243251105099. The next prime is 243251105131. The reversal of 243251105122 is 221501152342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 238846260961 + 4404844161 = 488719^2 + 66369^2 .

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

It is a super-2 number, since 2×243251105122² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783233 + ... + 2869300.

Almost surely, 2^243251105122 is an apocalyptic number.

243251105122 is a deficient number, since it is larger than the sum of its proper divisors (121642574714).

243251105122 is a wasteful number, since it uses less digits than its factorization.

243251105122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5674052.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 243251105122 its reverse (221501152342), we get a palindrome (464752257464).

The spelling of 243251105122 in words is "two hundred forty-three billion, two hundred fifty-one million, one hundred five thousand, one hundred twenty-two".