121100200110 has 24 divisors (see below), whose sum is σ = 314860520520. Its totient is φ = 32293386672.

The previous prime is 121100200103. The next prime is 121100200127. The reversal of 121100200110 is 11002001121.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 121100200092 and 121100200101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672778800 + ... + 672778979.

It is an arithmetic number, because the mean of its divisors is an integer number (13119188355).

Almost surely, 2^121100200110 is an apocalyptic number.

121100200110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100200110 is an abundant number, since it is smaller than the sum of its proper divisors (193760320410).

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

121100200110 is a wasteful number, since it uses less digits than its factorization.

121100200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345557792 (or 1345557789 counting only the distinct ones).

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

Adding to 121100200110 its reverse (11002001121), we get a palindrome (132102201231).

The spelling of 121100200110 in words is "one hundred twenty-one billion, one hundred million, two hundred thousand, one hundred ten".