121244861 has 2 divisors, whose sum is σ = 121244862. Its totient is φ = 121244860.

The previous prime is 121244843. The next prime is 121244899. The reversal of 121244861 is 168442121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109725625 + 11519236 = 10475^2 + 3394^2 .

It is a cyclic number.

It is not a de Polignac number, because 121244861 - 2¹⁴ = 121228477 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 (121244261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60622430 + 60622431.

It is an arithmetic number, because the mean of its divisors is an integer number (60622431).

Almost surely, 2^121244861 is an apocalyptic number.

It is an amenable number.

121244861 is a deficient number, since it is larger than the sum of its proper divisors (1).

121244861 is an equidigital number, since it uses as much as digits as its factorization.

121244861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 29.

The square root of 121244861 is about 11011.1244203306. The cubic root of 121244861 is about 494.9421569658.

Adding to 121244861 its reverse (168442121), we get a palindrome (289686982).

The spelling of 121244861 in words is "one hundred twenty-one million, two hundred forty-four thousand, eight hundred sixty-one".