121220222202200 has 144 divisors (see below), whose sum is σ = 312227077021440. Its totient is φ = 43732992441600.

The previous prime is 121220222202181. The next prime is 121220222202203. The reversal of 121220222202200 is 2202222022121.

121220222202200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220222202203) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 16647467 + ... + 22794266.

Almost surely, 2^{121220222202200} is an apocalyptic number.

121220222202200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220222202200 is an abundant number, since it is smaller than the sum of its proper divisors (191006854819240).

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

121220222202200 is a wasteful number, since it uses less digits than its factorization.

121220222202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39441898 (or 39441878 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 121220222202200 its reverse (2202222022121), we get a palindrome (123422444224321).

The spelling of 121220222202200 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred two thousand, two hundred".