121207741 has 2 divisors, whose sum is σ = 121207742. Its totient is φ = 121207740.

The previous prime is 121207729. The next prime is 121207747. The reversal of 121207741 is 147702121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77264100 + 43943641 = 8790^2 + 6629^2 .

It is a cyclic number.

It is not a de Polignac number, because 121207741 - 2¹³ = 121199549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121207747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60603870 + 60603871.

It is an arithmetic number, because the mean of its divisors is an integer number (60603871).

Almost surely, 2^121207741 is an apocalyptic number.

It is an amenable number.

121207741 is a deficient number, since it is larger than the sum of its proper divisors (1).

121207741 is an equidigital number, since it uses as much as digits as its factorization.

121207741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 121207741 is about 11009.4387232047. The cubic root of 121207741 is about 494.8916417578.

Adding to 121207741 its reverse (147702121), we get a palindrome (268909862).

The spelling of 121207741 in words is "one hundred twenty-one million, two hundred seven thousand, seven hundred forty-one".