121351601 has 16 divisors (see below), whose sum is σ = 143877120. Its totient is φ = 100180800.

The previous prime is 121351597. The next prime is 121351621. The reversal of 121351601 is 106153121.

It is a cyclic number.

It is not a de Polignac number, because 121351601 - 2² = 121351597 is a prime.

It is a super-2 number, since 2×121351601² = 29452422130526402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121351621) 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 in 15 ways as a sum of consecutive naturals, for example, 23840 + ... + 28478.

It is an arithmetic number, because the mean of its divisors is an integer number (8992320).

Almost surely, 2^121351601 is an apocalyptic number.

It is an amenable number.

121351601 is a deficient number, since it is larger than the sum of its proper divisors (22525519).

121351601 is a wasteful number, since it uses less digits than its factorization.

121351601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 121351601 is about 11015.9702704755. The cubic root of 121351601 is about 495.0873579794.

The spelling of 121351601 in words is "one hundred twenty-one million, three hundred fifty-one thousand, six hundred one".