121112201122110 has 192 divisors, whose sum is σ = 373555611359424. Its totient is φ = 26886593433600.

The previous prime is 121112201122051. The next prime is 121112201122151. The reversal of 121112201122110 is 11221102211121.

It is a happy number.

121112201122110 is a `hidden beast` number, since 1 + 211 + 1 + 220 + 1 + 1 + 221 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96623361 + ... + 97868780.

It is an arithmetic number, because the mean of its divisors is an integer number (1945602142497).

Almost surely, 2^{121112201122110} is an apocalyptic number.

121112201122110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112201122110 is an abundant number, since it is smaller than the sum of its proper divisors (252443410237314).

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

121112201122110 is a wasteful number, since it uses less digits than its factorization.

121112201122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194492219 (or 194492216 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121112201122110 its reverse (11221102211121), we get a palindrome (132333303333231).

The spelling of 121112201122110 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred twenty-two thousand, one hundred ten".