121200122201220 has 96 divisors (see below), whose sum is σ = 377090042515200. Its totient is φ = 32318061530112.

The previous prime is 121200122201161. The next prime is 121200122201321. The reversal of 121200122201220 is 22102221002121.

It is a happy number.

121200122201220 is a `hidden beast` number, since 1 + 2 + 120 + 0 + 122 + 201 + 220 = 666.

It is a super-2 number, since 2×121200122201220² (a number of 29 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 121200122201193 and 121200122201202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2029441 + ... + 15700919.

It is an arithmetic number, because the mean of its divisors is an integer number (3928021276200).

Almost surely, 2^{121200122201220} is an apocalyptic number.

121200122201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121200122201220 is an abundant number, since it is smaller than the sum of its proper divisors (255889920313980).

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

121200122201220 is a wasteful number, since it uses less digits than its factorization.

121200122201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13687914 (or 13687906 counting only the distinct ones).

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

Adding to 121200122201220 its reverse (22102221002121), we get a palindrome (143302343203341).

The spelling of 121200122201220 in words is "one hundred twenty-one trillion, two hundred billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty".