121310461 has 2 divisors, whose sum is σ = 121310462. Its totient is φ = 121310460.

The previous prime is 121310447. The next prime is 121310477. The reversal of 121310461 is 164013121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109620900 + 11689561 = 10470^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 121310461 - 2⁵ = 121310429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121310411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655230 + 60655231.

It is an arithmetic number, because the mean of its divisors is an integer number (60655231).

Almost surely, 2^121310461 is an apocalyptic number.

It is an amenable number.

121310461 is a deficient number, since it is larger than the sum of its proper divisors (1).

121310461 is an equidigital number, since it uses as much as digits as its factorization.

121310461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 121310461 is about 11014.1028231990. The cubic root of 121310461 is about 495.0314043267.

Adding to 121310461 its reverse (164013121), we get a palindrome (285323582).

It can be divided in two parts, 121310 and 461, that added together give a triangular number (121771 = T₄₉₃).

The spelling of 121310461 in words is "one hundred twenty-one million, three hundred ten thousand, four hundred sixty-one".