121520545232 has 20 divisors (see below), whose sum is σ = 235464651396. Its totient is φ = 60755473920.

The previous prime is 121520545231. The next prime is 121520545247. The reversal of 121520545232 is 232545025121.

It can be written as a sum of positive squares in 2 ways, for example, as 103617034816 + 17903510416 = 321896^2 + 133804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121520545231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 86393 + ... + 500504.

Almost surely, 2^121520545232 is an apocalyptic number.

It is an amenable number.

121520545232 is a deficient number, since it is larger than the sum of its proper divisors (113944106164).

121520545232 is a wasteful number, since it uses less digits than its factorization.

121520545232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599846 (or 599840 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 121520545232 in words is "one hundred twenty-one billion, five hundred twenty million, five hundred forty-five thousand, two hundred thirty-two".