12200010121 has 6 divisors (see below), whose sum is σ = 13210662030. Its totient is φ = 11261547648.

The previous prime is 12200010107. The next prime is 12200010127. The reversal of 12200010121 is 12101000221.

12200010121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1008697600 + 11191312521 = 31760^2 + 105789^2 .

It is not a de Polignac number, because 12200010121 - 2⁵ = 12200010089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200010098 and 12200010107.

It is not an unprimeable number, because it can be changed into a prime (12200010127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36094536 + ... + 36094873.

It is an arithmetic number, because the mean of its divisors is an integer number (2201777005).

Almost surely, 2^12200010121 is an apocalyptic number.

It is an amenable number.

12200010121 is a deficient number, since it is larger than the sum of its proper divisors (1010651909).

12200010121 is an equidigital number, since it uses as much as digits as its factorization.

12200010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72189435 (or 72189422 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12200010121 its reverse (12101000221), we get a palindrome (24301010342).

The spelling of 12200010121 in words is "twelve billion, two hundred million, ten thousand, one hundred twenty-one".