243121105532 has 6 divisors (see below), whose sum is σ = 425461934688. Its totient is φ = 121560552764.

The previous prime is 243121105459. The next prime is 243121105537. The reversal of 243121105532 is 235501121342.

It is a junction number, because it is equal to n+sod(n) for n = 243121105495 and 243121105504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121105537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30390138188 + ... + 30390138195.

It is an arithmetic number, because the mean of its divisors is an integer number (70910322448).

Almost surely, 2^243121105532 is an apocalyptic number.

It is an amenable number.

243121105532 is a deficient number, since it is larger than the sum of its proper divisors (182340829156).

243121105532 is a wasteful number, since it uses less digits than its factorization.

243121105532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60780276387 (or 60780276385 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 243121105532 its reverse (235501121342), we get a palindrome (478622226874).

The spelling of 243121105532 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred five thousand, five hundred thirty-two".