121152169 has 8 divisors (see below), whose sum is σ = 126027720. Its totient is φ = 116323200.

The previous prime is 121152167. The next prime is 121152173. The reversal of 121152169 is 961251121.

It can be written as a sum of positive squares in 4 ways, for example, as 416025 + 120736144 = 645^2 + 10988^2 .

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 121152169 - 2¹ = 121152167 is a prime.

It is a super-2 number, since 2×121152169² = 29355696106809122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121152167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6292 + ... + 16789.

It is an arithmetic number, because the mean of its divisors is an integer number (15753465).

Almost surely, 2^121152169 is an apocalyptic number.

It is an amenable number.

121152169 is a deficient number, since it is larger than the sum of its proper divisors (4875551).

121152169 is a wasteful number, since it uses less digits than its factorization.

121152169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23291.

The product of its digits is 1080, while the sum is 28.

The square root of 121152169 is about 11006.9145994688. The cubic root of 121152169 is about 494.8159966374.

The spelling of 121152169 in words is "one hundred twenty-one million, one hundred fifty-two thousand, one hundred sixty-nine".