121110000 has 200 divisors, whose sum is σ = 427663104. Its totient is φ = 29280000.

The previous prime is 121109959. The next prime is 121110037. The reversal of 121110000 is 11121.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (6).

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

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 39 ways as a sum of consecutive naturals, for example, 329817 + ... + 330183.

Almost surely, 2^121110000 is an apocalyptic number.

121110000 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 121110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213831552).

121110000 is an abundant number, since it is smaller than the sum of its proper divisors (306553104).

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

121110000 is a wasteful number, since it uses less digits than its factorization.

121110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 121110000 is about 11004.9988641526. The cubic root of 121110000 is about 494.7585803669.

Adding to 121110000 its reverse (11121), we get a palindrome (121121121).

It can be divided in two parts, 1211 and 10000, that added together give a palindrome (11211).

The spelling of 121110000 in words is "one hundred twenty-one million, one hundred ten thousand".