121310407 has 2 divisors, whose sum is σ = 121310408. Its totient is φ = 121310406.

The previous prime is 121310369. The next prime is 121310411. The reversal of 121310407 is 704013121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121310407 - 2⁷ = 121310279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121310447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655203 + 60655204.

It is an arithmetic number, because the mean of its divisors is an integer number (60655204).

Almost surely, 2^121310407 is an apocalyptic number.

121310407 is a deficient number, since it is larger than the sum of its proper divisors (1).

121310407 is an equidigital number, since it uses as much as digits as its factorization.

121310407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 121310407 is about 11014.1003717961. The cubic root of 121310407 is about 495.0313308741.

Adding to 121310407 its reverse (704013121), we get a palindrome (825323528).

The spelling of 121310407 in words is "one hundred twenty-one million, three hundred ten thousand, four hundred seven".