12200122210121 has 8 divisors (see below), whose sum is σ = 12204079859400. Its totient is φ = 12196165074048.

The previous prime is 12200122210103. The next prime is 12200122210183. The reversal of 12200122210121 is 12101222100221.

It can be written as a sum of positive squares in 4 ways, for example, as 568877977600 + 11631244232521 = 754240^2 + 3410461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12200122210121 - 2¹⁰ = 12200122209097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12200122210121.

It is not an unprimeable number, because it can be changed into a prime (12200122210321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50639855 + ... + 50880203.

It is an arithmetic number, because the mean of its divisors is an integer number (1525509982425).

Almost surely, 2^{12200122210121} is an apocalyptic number.

It is an amenable number.

12200122210121 is a deficient number, since it is larger than the sum of its proper divisors (3957649279).

12200122210121 is a wasteful number, since it uses less digits than its factorization.

12200122210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256603.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12200122210121 its reverse (12101222100221), we get a palindrome (24301344310342).

The spelling of 12200122210121 in words is "twelve trillion, two hundred billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".