121200000110 has 64 divisors (see below), whose sum is σ = 258726528000. Its totient is φ = 40849907616.

The previous prime is 121200000109. The next prime is 121200000139. The reversal of 121200000110 is 11000002121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97082 + ... + 501821.

It is an arithmetic number, because the mean of its divisors is an integer number (4042602000).

Almost surely, 2^121200000110 is an apocalyptic number.

121200000110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121200000110 is an abundant number, since it is smaller than the sum of its proper divisors (137526527890).

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

121200000110 is an equidigital number, since it uses as much as digits as its factorization.

121200000110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598990 (or 598976 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121200000110 its reverse (11000002121), we get a palindrome (132200002231).

The spelling of 121200000110 in words is "one hundred twenty-one billion, two hundred million, one hundred ten", and thus it is an aban number.