121200112110 has 256 divisors, whose sum is σ = 368609107968. Its totient is φ = 24774336000.

The previous prime is 121200112097. The next prime is 121200112127. The reversal of 121200112110 is 11211002121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38027937 + ... + 38031123.

It is an arithmetic number, because the mean of its divisors is an integer number (1439879328).

Almost surely, 2^121200112110 is an apocalyptic number.

121200112110 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 121200112110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184304553984).

121200112110 is an abundant number, since it is smaller than the sum of its proper divisors (247408995858).

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

121200112110 is a wasteful number, since it uses less digits than its factorization.

121200112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121200112110 its reverse (11211002121), we get a palindrome (132411114231).

It can be divided in two parts, 12120011 and 2110, that added together give a palindrome (12122121).

The spelling of 121200112110 in words is "one hundred twenty-one billion, two hundred million, one hundred twelve thousand, one hundred ten".