121220310310 has 16 divisors (see below), whose sum is σ = 238032609552. Its totient is φ = 44080112800.

The previous prime is 121220310247. The next prime is 121220310319. The reversal of 121220310310 is 13013022121.

It is a super-2 number, since 2×121220310310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220310319) 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, 551001301 + ... + 551001520.

It is an arithmetic number, because the mean of its divisors is an integer number (14877038097).

Almost surely, 2^121220310310 is an apocalyptic number.

121220310310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220310310 is a deficient number, since it is larger than the sum of its proper divisors (116812299242).

121220310310 is a wasteful number, since it uses less digits than its factorization.

121220310310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102002839.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121220310310 its reverse (13013022121), we get a palindrome (134233332431).

The spelling of 121220310310 in words is "one hundred twenty-one billion, two hundred twenty million, three hundred ten thousand, three hundred ten".