121320310 has 16 divisors (see below), whose sum is σ = 218803536. Its totient is φ = 48433248.

The previous prime is 121320289. The next prime is 121320319. The reversal of 121320310 is 13023121.

It is a super-2 number, since 2×121320310² = 29437235236992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320319) 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, 6369 + ... + 16828.

It is an arithmetic number, because the mean of its divisors is an integer number (13675221).

Almost surely, 2^121320310 is an apocalyptic number.

121320310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121320310 is a deficient number, since it is larger than the sum of its proper divisors (97483226).

121320310 is a wasteful number, since it uses less digits than its factorization.

121320310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23727.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121320310 is about 11014.5499227159. The cubic root of 121320310 is about 495.0448008970.

Adding to 121320310 its reverse (13023121), we get a palindrome (134343431).

The spelling of 121320310 in words is "one hundred twenty-one million, three hundred twenty thousand, three hundred ten".