121135901 has 2 divisors, whose sum is σ = 121135902. Its totient is φ = 121135900.

The previous prime is 121135867. The next prime is 121135907. The reversal of 121135901 is 109531121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92256025 + 28879876 = 9605^2 + 5374^2 .

It is a cyclic number.

It is not a de Polignac number, because 121135901 - 2⁶ = 121135837 is a prime.

It is a super-2 number, since 2×121135901² = 29347813022163602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121135907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60567950 + 60567951.

It is an arithmetic number, because the mean of its divisors is an integer number (60567951).

Almost surely, 2^121135901 is an apocalyptic number.

It is an amenable number.

121135901 is a deficient number, since it is larger than the sum of its proper divisors (1).

121135901 is an equidigital number, since it uses as much as digits as its factorization.

121135901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 121135901 is about 11006.1755846434. The cubic root of 121135901 is about 494.7938481085.

The spelling of 121135901 in words is "one hundred twenty-one million, one hundred thirty-five thousand, nine hundred one".