121569232 has 10 divisors (see below), whose sum is σ = 235540418. Its totient is φ = 60784608.

The previous prime is 121569221. The next prime is 121569233. The reversal of 121569232 is 232965121.

It can be written as a sum of positive squares in only one way, i.e., 105760656 + 15808576 = 10284^2 + 3976^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121569194 and 121569203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121569233) by changing a digit.

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 as a sum of consecutive naturals, namely, 3799023 + ... + 3799054.

Almost surely, 2^121569232 is an apocalyptic number.

It is an amenable number.

121569232 is a deficient number, since it is larger than the sum of its proper divisors (113971186).

121569232 is an equidigital number, since it uses as much as digits as its factorization.

121569232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7598085 (or 7598079 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 121569232 is about 11025.8438225834. The cubic root of 121569232 is about 495.3831431456.

It can be divided in two parts, 121569 and 232, that added together give a square (121801 = 349²).

The spelling of 121569232 in words is "one hundred twenty-one million, five hundred sixty-nine thousand, two hundred thirty-two".