121551301 has 4 divisors (see below), whose sum is σ = 121584204. Its totient is φ = 121518400.

The previous prime is 121551299. The next prime is 121551307. The reversal of 121551301 is 103155121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119793025 + 1758276 = 10945^2 + 1326^2 .

It is a cyclic number.

It is not a de Polignac number, because 121551301 - 2¹ = 121551299 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 (121551307) 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 3 ways as a sum of consecutive naturals, for example, 10090 + ... + 18571.

It is an arithmetic number, because the mean of its divisors is an integer number (30396051).

Almost surely, 2^121551301 is an apocalyptic number.

It is an amenable number.

121551301 is a deficient number, since it is larger than the sum of its proper divisors (32903).

121551301 is an equidigital number, since it uses as much as digits as its factorization.

121551301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32902.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 121551301 is about 11025.0306575537. The cubic root of 121551301 is about 495.3587862373.

It can be divided in two parts, 12155 and 1301, that added together give a square (13456 = 116²).

The spelling of 121551301 in words is "one hundred twenty-one million, five hundred fifty-one thousand, three hundred one".