121732000321 has 4 divisors (see below), whose sum is σ = 122254455492. Its totient is φ = 121209545152.

The previous prime is 121732000303. The next prime is 121732000373. The reversal of 121732000321 is 123000237121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123000237121 = 37 ⋅3324330733.

It can be written as a sum of positive squares in 2 ways, for example, as 24472222096 + 97259778225 = 156436^2 + 311865^2 .

It is a cyclic number.

It is not a de Polignac number, because 121732000321 - 2³¹ = 119584516673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121732000292 and 121732000301.

It is not an unprimeable number, because it can be changed into a prime (121732000301) 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 in 3 ways as a sum of consecutive naturals, for example, 261227236 + ... + 261227701.

It is an arithmetic number, because the mean of its divisors is an integer number (30563613873).

Almost surely, 2^121732000321 is an apocalyptic number.

121732000321 is the 186496-th centered heptagonal number.

It is an amenable number.

121732000321 is a deficient number, since it is larger than the sum of its proper divisors (522455171).

121732000321 is an equidigital number, since it uses as much as digits as its factorization.

121732000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522455170.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 121732000321 its reverse (123000237121), we get a palindrome (244732237442).

The spelling of 121732000321 in words is "one hundred twenty-one billion, seven hundred thirty-two million, three hundred twenty-one", and thus it is an aban number.