121112220200200 has 48 divisors (see below), whose sum is σ = 282274386268500. Its totient is φ = 48326440888320.

The previous prime is 121112220200149. The next prime is 121112220200287. The reversal of 121112220200200 is 2002022211121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 101387056744996 + 19725163455204 = 10069114^2 + 4441302^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740212945 + ... + 740376544.

Almost surely, 2^{121112220200200} is an apocalyptic number.

121112220200200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112220200200 is an abundant number, since it is smaller than the sum of its proper divisors (161162166068300).

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

121112220200200 is a wasteful number, since it uses less digits than its factorization.

121112220200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480589914 (or 1480589905 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121112220200200 its reverse (2002022211121), we get a palindrome (123114242411321).

The spelling of 121112220200200 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty million, two hundred thousand, two hundred".