121441399 has 2 divisors, whose sum is σ = 121441400. Its totient is φ = 121441398.

The previous prime is 121441393. The next prime is 121441409. The reversal of 121441399 is 993144121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121441399 - 2¹⁷ = 121310327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121441393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60720699 + 60720700.

It is an arithmetic number, because the mean of its divisors is an integer number (60720700).

Almost surely, 2^121441399 is an apocalyptic number.

121441399 is a deficient number, since it is larger than the sum of its proper divisors (1).

121441399 is an equidigital number, since it uses as much as digits as its factorization.

121441399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 121441399 is about 11020.0453265855. The cubic root of 121441399 is about 495.2094464471.

The spelling of 121441399 in words is "one hundred twenty-one million, four hundred forty-one thousand, three hundred ninety-nine".