12210220100121 has 4 divisors (see below), whose sum is σ = 16280293466832. Its totient is φ = 8140146733412.

The previous prime is 12210220100053. The next prime is 12210220100129. The reversal of 12210220100121 is 12100102201221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12210220100121 - 2¹³ = 12210220091929 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12210220100121.

It is not an unprimeable number, because it can be changed into a prime (12210220100129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035036683351 + ... + 2035036683356.

It is an arithmetic number, because the mean of its divisors is an integer number (4070073366708).

Almost surely, 2^{12210220100121} is an apocalyptic number.

It is an amenable number.

12210220100121 is a deficient number, since it is larger than the sum of its proper divisors (4070073366711).

12210220100121 is an equidigital number, since it uses as much as digits as its factorization.

12210220100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070073366710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12210220100121 its reverse (12100102201221), we get a palindrome (24310322301342).

The spelling of 12210220100121 in words is "twelve trillion, two hundred ten billion, two hundred twenty million, one hundred thousand, one hundred twenty-one".