121223461 has 2 divisors, whose sum is σ = 121223462. Its totient is φ = 121223460.

The previous prime is 121223419. The next prime is 121223467. The reversal of 121223461 is 164322121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73530625 + 47692836 = 8575^2 + 6906^2 .

It is an emirp because it is prime and its reverse (164322121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121223461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121223467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611730 + 60611731.

It is an arithmetic number, because the mean of its divisors is an integer number (60611731).

Almost surely, 2^121223461 is an apocalyptic number.

It is an amenable number.

121223461 is a deficient number, since it is larger than the sum of its proper divisors (1).

121223461 is an equidigital number, since it uses as much as digits as its factorization.

121223461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 121223461 is about 11010.1526329111. The cubic root of 121223461 is about 494.9130357718.

Adding to 121223461 its reverse (164322121), we get a palindrome (285545582).

The spelling of 121223461 in words is "one hundred twenty-one million, two hundred twenty-three thousand, four hundred sixty-one".