121213330120 has 32 divisors (see below), whose sum is σ = 275541651000. Its totient is φ = 47985481728.

The previous prime is 121213330111. The next prime is 121213330123. The reversal of 121213330120 is 21033312121.

It can be written as a sum of positive squares in 4 ways, for example, as 109496133604 + 11717196516 = 330902^2 + 108246^2 .

It is not an unprimeable number, because it can be changed into a prime (121213330123) 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, 15616395 + ... + 15624154.

Almost surely, 2^121213330120 is an apocalyptic number.

121213330120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121213330120 is an abundant number, since it is smaller than the sum of its proper divisors (154328320880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121213330120 is a wasteful number, since it uses less digits than its factorization.

121213330120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31240657 (or 31240653 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121213330120 its reverse (21033312121), we get a palindrome (142246642241).

The spelling of 121213330120 in words is "one hundred twenty-one billion, two hundred thirteen million, three hundred thirty thousand, one hundred twenty".