121265501 has 8 divisors (see below), whose sum is σ = 143368320. Its totient is φ = 100357488.

The previous prime is 121265489. The next prime is 121265509. The reversal of 121265501 is 105562121.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-121265501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121265509) 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 7 ways as a sum of consecutive naturals, for example, 298481 + ... + 298886.

It is an arithmetic number, because the mean of its divisors is an integer number (17921040).

Almost surely, 2^121265501 is an apocalyptic number.

It is an amenable number.

121265501 is a deficient number, since it is larger than the sum of its proper divisors (22102819).

121265501 is an equidigital number, since it uses as much as digits as its factorization.

121265501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597403.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 121265501 is about 11012.0616144299. The cubic root of 121265501 is about 494.9702407032.

The spelling of 121265501 in words is "one hundred twenty-one million, two hundred sixty-five thousand, five hundred one".