121031321 has 2 divisors, whose sum is σ = 121031322. Its totient is φ = 121031320.

The previous prime is 121031269. The next prime is 121031327. The reversal of 121031321 is 123130121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 38875225 = 9064^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 121031321 - 2¹⁰ = 121030297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121031296 and 121031305.

It is not a weakly prime, because it can be changed into another prime (121031327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515660 + 60515661.

It is an arithmetic number, because the mean of its divisors is an integer number (60515661).

Almost surely, 2^121031321 is an apocalyptic number.

It is an amenable number.

121031321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121031321 is an equidigital number, since it uses as much as digits as its factorization.

121031321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121031321 is about 11001.4235896997. The cubic root of 121031321 is about 494.6514173386.

Adding to 121031321 its reverse (123130121), we get a palindrome (244161442).

The spelling of 121031321 in words is "one hundred twenty-one million, thirty-one thousand, three hundred twenty-one".