121000110 has 128 divisors (see below), whose sum is σ = 369792000. Its totient is φ = 25119360.

The previous prime is 121000049. The next prime is 121000123. The reversal of 121000110 is 11000121.

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

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, 112656 + ... + 113724.

It is an arithmetic number, because the mean of its divisors is an integer number (2889000).

Almost surely, 2^121000110 is an apocalyptic number.

121000110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121000110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184896000).

121000110 is an abundant number, since it is smaller than the sum of its proper divisors (248791890).

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

121000110 is a wasteful number, since it uses less digits than its factorization.

121000110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1097 counting only the distinct ones).

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

The square root of 121000110 is about 11000.0049999989. The cubic root of 121000110 is about 494.6088942063.

Adding to 121000110 its reverse (11000121), we get a palindrome (132000231).

The spelling of 121000110 in words is "one hundred twenty-one million, one hundred ten", and thus it is an aban number.