121112112000 has 512 divisors, whose sum is σ = 457074109440. Its totient is φ = 28081152000.

The previous prime is 121112111987. The next prime is 121112112031. The reversal of 121112112000 is 211211121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12139014 + ... + 12148986.

It is an arithmetic number, because the mean of its divisors is an integer number (892722870).

Almost surely, 2^121112112000 is an apocalyptic number.

121112112000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121112112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228537054720).

121112112000 is an abundant number, since it is smaller than the sum of its proper divisors (335961997440).

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

121112112000 is a wasteful number, since it uses less digits than its factorization.

121112112000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10039 (or 10017 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121112112000 its reverse (211211121), we get a palindrome (121323323121).

The spelling of 121112112000 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand".