121243453232 has 40 divisors (see below), whose sum is σ = 256288877712. Its totient is φ = 55105433600.

The previous prime is 121243453223. The next prime is 121243453291. The reversal of 121243453232 is 232354342121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2300132 + ... + 2352252.

Almost surely, 2^121243453232 is an apocalyptic number.

It is an amenable number.

121243453232 is an abundant number, since it is smaller than the sum of its proper divisors (135045424480).

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

121243453232 is a wasteful number, since it uses less digits than its factorization.

121243453232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65357 (or 65351 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

Adding to 121243453232 its reverse (232354342121), we get a palindrome (353597795353).

Subtracting 121243453232 from its reverse (232354342121), we obtain a square (111110888889 = 333333²).

It can be divided in two parts, 121243 and 453232, that added together give a palindrome (574475).

The spelling of 121243453232 in words is "one hundred twenty-one billion, two hundred forty-three million, four hundred fifty-three thousand, two hundred thirty-two".