121100110 has 16 divisors (see below), whose sum is σ = 229453200. Its totient is φ = 45890496.

The previous prime is 121100107. The next prime is 121100117. The reversal of 121100110 is 11001121.

It is a junction number, because it is equal to n+sod(n) for n = 121100093 and 121100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318495 + ... + 318874.

It is an arithmetic number, because the mean of its divisors is an integer number (14340825).

Almost surely, 2^121100110 is an apocalyptic number.

121100110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100110 is a deficient number, since it is larger than the sum of its proper divisors (108353090).

121100110 is a wasteful number, since it uses less digits than its factorization.

121100110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637395.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 121100110 is about 11004.5495137239. The cubic root of 121100110 is about 494.7451124573.

Adding to 121100110 its reverse (11001121), we get a palindrome (132101231).

The spelling of 121100110 in words is "one hundred twenty-one million, one hundred thousand, one hundred ten".