121320206 has 16 divisors (see below), whose sum is σ = 218924160. Its totient is φ = 49257720.

The previous prime is 121320203. The next prime is 121320223. The reversal of 121320206 is 602023121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227780 + ... + 228311.

It is an arithmetic number, because the mean of its divisors is an integer number (13682760).

Almost surely, 2^121320206 is an apocalyptic number.

121320206 is a deficient number, since it is larger than the sum of its proper divisors (97603954).

121320206 is a wasteful number, since it uses less digits than its factorization.

121320206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456119.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121320206 is about 11014.5452016867. The cubic root of 121320206 is about 495.0446594404.

Adding to 121320206 its reverse (602023121), we get a palindrome (723343327).

The spelling of 121320206 in words is "one hundred twenty-one million, three hundred twenty thousand, two hundred six".