121946113 has 2 divisors, whose sum is σ = 121946114. Its totient is φ = 121946112.

The previous prime is 121946107. The next prime is 121946141. The reversal of 121946113 is 311649121.

It is an a-pointer prime, because the next prime (121946141) can be obtained adding 121946113 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121727089 + 219024 = 11033^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 121946113 - 2⁹ = 121945601 is a prime.

It is not a weakly prime, because it can be changed into another prime (121946183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60973056 + 60973057.

It is an arithmetic number, because the mean of its divisors is an integer number (60973057).

It is a Proth number, since it is equal to 7443 ⋅ 2¹⁴ + 1 and 7443 < 2¹⁴.

Almost surely, 2^121946113 is an apocalyptic number.

It is an amenable number.

121946113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121946113 is an equidigital number, since it uses as much as digits as its factorization.

121946113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 121946113 is about 11042.9213978910. The cubic root of 121946113 is about 495.8945332144.

The spelling of 121946113 in words is "one hundred twenty-one million, nine hundred forty-six thousand, one hundred thirteen".