121023223312 has 80 divisors (see below), whose sum is σ = 251577023040. Its totient is φ = 56198283264.

The previous prime is 121023223273. The next prime is 121023223339. The reversal of 121023223312 is 213322320121.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9148639 + ... + 9161857.

It is an arithmetic number, because the mean of its divisors is an integer number (3144712788).

Almost surely, 2^121023223312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121023223312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125788511520).

121023223312 is an abundant number, since it is smaller than the sum of its proper divisors (130553799728).

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

121023223312 is a wasteful number, since it uses less digits than its factorization.

121023223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13688 (or 13682 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 121023223312 its reverse (213322320121), we get a palindrome (334345543433).

The spelling of 121023223312 in words is "one hundred twenty-one billion, twenty-three million, two hundred twenty-three thousand, three hundred twelve".