112100121000 has 384 divisors, whose sum is σ = 444739426560. Its totient is φ = 24929856000.

The previous prime is 112100120981. The next prime is 112100121017. The reversal of 112100121000 is 121001211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2306955 + ... + 2355045.

It is an arithmetic number, because the mean of its divisors is an integer number (1158175590).

Almost surely, 2^112100121000 is an apocalyptic number.

112100121000 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 112100121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222369713280).

112100121000 is an abundant number, since it is smaller than the sum of its proper divisors (332639305560).

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

112100121000 is a wasteful number, since it uses less digits than its factorization.

112100121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48162 (or 48145 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 112100121000 its reverse (121001211), we get a palindrome (112221122211).

The spelling of 112100121000 in words is "one hundred twelve billion, one hundred million, one hundred twenty-one thousand".