122200200120121 has 4 divisors (see below), whose sum is σ = 122201044766244. Its totient is φ = 122199355474000.

The previous prime is 122200200120073. The next prime is 122200200120169. The reversal of 122200200120121 is 121021002002221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (122200200120073) and next prime (122200200120169).

It can be written as a sum of positive squares in 2 ways, for example, as 60046071123600 + 62154128996521 = 7748940^2 + 7883789^2 .

It is a cyclic number.

It is not a de Polignac number, because 122200200120121 - 2⁷ = 122200200119993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122200200120095 and 122200200120104.

It is not an unprimeable number, because it can be changed into a prime (122200200120221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422106010 + ... + 422395411.

It is an arithmetic number, because the mean of its divisors is an integer number (30550261191561).

Almost surely, 2^{122200200120121} is an apocalyptic number.

It is an amenable number.

122200200120121 is a deficient number, since it is larger than the sum of its proper divisors (844646123).

122200200120121 is an equidigital number, since it uses as much as digits as its factorization.

122200200120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844646122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122200200120121 its reverse (121021002002221), we get a palindrome (243221202122342).

The spelling of 122200200120121 in words is "one hundred twenty-two trillion, two hundred billion, two hundred million, one hundred twenty thousand, one hundred twenty-one".