121200112210 has 64 divisors (see below), whose sum is σ = 227191392000. Its totient is φ = 46521775872.

The previous prime is 121200112193. The next prime is 121200112217. The reversal of 121200112210 is 12211002121.

It is not an unprimeable number, because it can be changed into a prime (121200112217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6212992 + ... + 6232468.

It is an arithmetic number, because the mean of its divisors is an integer number (3549865500).

Almost surely, 2^121200112210 is an apocalyptic number.

121200112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121200112210 is a deficient number, since it is larger than the sum of its proper divisors (105991279790).

121200112210 is a wasteful number, since it uses less digits than its factorization.

121200112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19795.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121200112210 its reverse (12211002121), we get a palindrome (133411114331).

The spelling of 121200112210 in words is "one hundred twenty-one billion, two hundred million, one hundred twelve thousand, two hundred ten".