732121121 has 2 divisors, whose sum is σ = 732121122. Its totient is φ = 732121120.

The previous prime is 732121001. The next prime is 732121123. The reversal of 732121121 is 121121237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561453025 + 170668096 = 23695^2 + 13064^2 .

It is an emirp because it is prime and its reverse (121121237) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-732121121 is a prime.

Together with 732121123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 732121093 and 732121102.

It is not a weakly prime, because it can be changed into another prime (732121123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 366060560 + 366060561.

It is an arithmetic number, because the mean of its divisors is an integer number (366060561).

Almost surely, 2^732121121 is an apocalyptic number.

It is an amenable number.

732121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

732121121 is an equidigital number, since it uses as much as digits as its factorization.

732121121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 20.

The square root of 732121121 is about 27057.7368048401. The cubic root of 732121121 is about 901.2825832661.

Adding to 732121121 its reverse (121121237), we get a palindrome (853242358).

The spelling of 732121121 in words is "seven hundred thirty-two million, one hundred twenty-one thousand, one hundred twenty-one".