121122222202200 has 192 divisors, whose sum is σ = 388500061860000. Its totient is φ = 31179580579840.

The previous prime is 121122222202151. The next prime is 121122222202231. The reversal of 121122222202200 is 2202222221121.

It is a super-2 number, since 2×121122222202200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91510726 + ... + 92824874.

Almost surely, 2^{121122222202200} is an apocalyptic number.

121122222202200 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 121122222202200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194250030930000).

121122222202200 is an abundant number, since it is smaller than the sum of its proper divisors (267377839657800).

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

121122222202200 is a wasteful number, since it uses less digits than its factorization.

121122222202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319494 (or 1319485 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121122222202200 its reverse (2202222221121), we get a palindrome (123324444423321).

The spelling of 121122222202200 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred two thousand, two hundred".