121222202200 has 192 divisors, whose sum is σ = 312783016320. Its totient is φ = 43321344000.

The previous prime is 121222202161. The next prime is 121222202207. The reversal of 121222202200 is 2202222121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222202207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94482759 + ... + 94484041.

It is an arithmetic number, because the mean of its divisors is an integer number (1629078210).

Almost surely, 2^121222202200 is an apocalyptic number.

121222202200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121222202200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156391508160).

121222202200 is an abundant number, since it is smaller than the sum of its proper divisors (191560814120).

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

121222202200 is a wasteful number, since it uses less digits than its factorization.

121222202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121222202200 its reverse (2202222121), we get a palindrome (123424424321).

The spelling of 121222202200 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, two hundred".