121223304532 has 18 divisors (see below), whose sum is σ = 233179539194. Its totient is φ = 55101501840.

The previous prime is 121223304529. The next prime is 121223304593. The reversal of 121223304532 is 235403322121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 92213039556 + 29010264976 = 303666^2 + 170324^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121223304532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125230203 + ... + 125231170.

Almost surely, 2^121223304532 is an apocalyptic number.

It is an amenable number.

121223304532 is a deficient number, since it is larger than the sum of its proper divisors (111956234662).

121223304532 is a wasteful number, since it uses less digits than its factorization.

121223304532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250461399 (or 250461386 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 121223304532 its reverse (235403322121), we get a palindrome (356626626653).

The spelling of 121223304532 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred four thousand, five hundred thirty-two".