121320151 has 8 divisors (see below), whose sum is σ = 125232800. Its totient is φ = 117440928.

The previous prime is 121320103. The next prime is 121320163. The reversal of 121320151 is 151023121.

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 121320151 - 2²⁵ = 87765719 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 (121320181) 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, 876 + ... + 15601.

It is an arithmetic number, because the mean of its divisors is an integer number (15654100).

Almost surely, 2^121320151 is an apocalyptic number.

121320151 is a deficient number, since it is larger than the sum of its proper divisors (3912649).

121320151 is a wasteful number, since it uses less digits than its factorization.

121320151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16713.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 121320151 is about 11014.5427049878. The cubic root of 121320151 is about 495.0445846316.

Adding to 121320151 its reverse (151023121), we get a palindrome (272343272).

The spelling of 121320151 in words is "one hundred twenty-one million, three hundred twenty thousand, one hundred fifty-one".