121421170 has 16 divisors (see below), whose sum is σ = 235370520. Its totient is φ = 44832384.

The previous prime is 121421159. The next prime is 121421177. The reversal of 121421170 is 71124121.

It can be written as a sum of positive squares in 4 ways, for example, as 43151761 + 78269409 = 6569^2 + 8847^2 .

It is not an unprimeable number, because it can be changed into a prime (121421177) 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, 466875 + ... + 467134.

Almost surely, 2^121421170 is an apocalyptic number.

121421170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121421170 is a deficient number, since it is larger than the sum of its proper divisors (113949350).

121421170 is a wasteful number, since it uses less digits than its factorization.

121421170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934029.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 121421170 is about 11019.1274609199. The cubic root of 121421170 is about 495.1819485531.

Adding to 121421170 its reverse (71124121), we get a palindrome (192545291).

The spelling of 121421170 in words is "one hundred twenty-one million, four hundred twenty-one thousand, one hundred seventy".