121120320312 has 48 divisors (see below), whose sum is σ = 331416015840. Its totient is φ = 39957216768.

The previous prime is 121120320259. The next prime is 121120320323. The reversal of 121120320312 is 213023021121.

121120320312 is a `hidden beast` number, since 1 + 2 + 11 + 20 + 320 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8664288 + ... + 8678255.

It is an arithmetic number, because the mean of its divisors is an integer number (6904500330).

Almost surely, 2^121120320312 is an apocalyptic number.

121120320312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121120320312 is an abundant number, since it is smaller than the sum of its proper divisors (210295695528).

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

121120320312 is a wasteful number, since it uses less digits than its factorization.

121120320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17342652 (or 17342645 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121120320312 its reverse (213023021121), we get a palindrome (334143341433).

The spelling of 121120320312 in words is "one hundred twenty-one billion, one hundred twenty million, three hundred twenty thousand, three hundred twelve".