121242230 has 16 divisors (see below), whose sum is σ = 229722480. Its totient is φ = 45944352.

The previous prime is 121242221. The next prime is 121242293. The reversal of 121242230 is 32242121.

It is a junction number, because it is equal to n+sod(n) for n = 121242199 and 121242208.

It is a congruent number.

It is an unprimeable number.

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, 318869 + ... + 319248.

It is an arithmetic number, because the mean of its divisors is an integer number (14357655).

Almost surely, 2^121242230 is an apocalyptic number.

121242230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121242230 is a deficient number, since it is larger than the sum of its proper divisors (108480250).

121242230 is a wasteful number, since it uses less digits than its factorization.

121242230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638143.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121242230 is about 11011.0049495947. The cubic root of 121242230 is about 494.9385768767.

Adding to 121242230 its reverse (32242121), we get a palindrome (153484351).

The spelling of 121242230 in words is "one hundred twenty-one million, two hundred forty-two thousand, two hundred thirty".