121654601 has 8 divisors (see below), whose sum is σ = 130087944. Its totient is φ = 113363200.

The previous prime is 121654597. The next prime is 121654619. The reversal of 121654601 is 106456121.

It can be written as a sum of positive squares in 4 ways, for example, as 91393600 + 30261001 = 9560^2 + 5501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121654601 - 2² = 121654597 is a prime.

It is a super-3 number, since 3×121654601³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121654651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33710 + ... + 37143.

It is an arithmetic number, because the mean of its divisors is an integer number (16260993).

Almost surely, 2^121654601 is an apocalyptic number.

It is an amenable number.

121654601 is a deficient number, since it is larger than the sum of its proper divisors (8433343).

121654601 is a wasteful number, since it uses less digits than its factorization.

121654601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70971.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 121654601 is about 11029.7144568661. The cubic root of 121654601 is about 495.4990728853.

The spelling of 121654601 in words is "one hundred twenty-one million, six hundred fifty-four thousand, six hundred one".