121497841 has 2 divisors, whose sum is σ = 121497842. Its totient is φ = 121497840.

The previous prime is 121497823. The next prime is 121497851. The reversal of 121497841 is 148794121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84713616 + 36784225 = 9204^2 + 6065^2 .

It is a cyclic number.

It is not a de Polignac number, because 121497841 - 2¹¹ = 121495793 is a prime.

It is a super-2 number, since 2×121497841² = 29523450735322562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121497841.

It is not a weakly prime, because it can be changed into another prime (121497811) 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, 60748920 + 60748921.

It is an arithmetic number, because the mean of its divisors is an integer number (60748921).

Almost surely, 2^121497841 is an apocalyptic number.

It is an amenable number.

121497841 is a deficient number, since it is larger than the sum of its proper divisors (1).

121497841 is an equidigital number, since it uses as much as digits as its factorization.

121497841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The square root of 121497841 is about 11022.6059078604. The cubic root of 121497841 is about 495.2861536292.

The spelling of 121497841 in words is "one hundred twenty-one million, four hundred ninety-seven thousand, eight hundred forty-one".