121222112020200 has 120 divisors (see below), whose sum is σ = 421022353933830. Its totient is φ = 32325896534400.

The previous prime is 121222112020159. The next prime is 121222112020249. The reversal of 121222112020200 is 2020211222121.

It is a happy number.

121222112020200 is a `hidden beast` number, since 1 + 212 + 2 + 211 + 20 + 20 + 200 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 78320057419044 + 42902054601156 = 8849862^2 + 6549966^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3741407011 + ... + 3741439410.

Almost surely, 2^{121222112020200} is an apocalyptic number.

121222112020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222112020200 is an abundant number, since it is smaller than the sum of its proper divisors (299800241913630).

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

121222112020200 is a wasteful number, since it uses less digits than its factorization.

121222112020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482846449 (or 7482846431 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222112020200 its reverse (2020211222121), we get a palindrome (123242323242321).

The spelling of 121222112020200 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twelve million, twenty thousand, two hundred".