121008757 has 2 divisors, whose sum is σ = 121008758. Its totient is φ = 121008756.

The previous prime is 121008749. The next prime is 121008791. The reversal of 121008757 is 757800121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111218116 + 9790641 = 10546^2 + 3129^2 .

It is a cyclic number.

It is not a de Polignac number, because 121008757 - 2³ = 121008749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121008157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60504378 + 60504379.

It is an arithmetic number, because the mean of its divisors is an integer number (60504379).

Almost surely, 2^121008757 is an apocalyptic number.

It is an amenable number.

121008757 is a deficient number, since it is larger than the sum of its proper divisors (1).

121008757 is an equidigital number, since it uses as much as digits as its factorization.

121008757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 121008757 is about 11000.3980382530. The cubic root of 121008757 is about 494.6206759620.

Adding to 121008757 its reverse (757800121), we get a palindrome (878808878).

The spelling of 121008757 in words is "one hundred twenty-one million, eight thousand, seven hundred fifty-seven".