12211210100121 has 8 divisors (see below), whose sum is σ = 16843048414080. Its totient is φ = 7860089259792.

The previous prime is 12211210100039. The next prime is 12211210100129. The reversal of 12211210100121 is 12100101211221.

It is a happy number.

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

It is not a de Polignac number, because 12211210100121 - 2⁷ = 12211210099993 is a prime.

It is a super-2 number, since 2×12211210100121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211210100121.

It is not an unprimeable number, because it can be changed into a prime (12211210100129) 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 7 ways as a sum of consecutive naturals, for example, 70179368305 + ... + 70179368478.

It is an arithmetic number, because the mean of its divisors is an integer number (2105381051760).

Almost surely, 2^{12211210100121} is an apocalyptic number.

It is an amenable number.

12211210100121 is a deficient number, since it is larger than the sum of its proper divisors (4631838313959).

12211210100121 is a wasteful number, since it uses less digits than its factorization.

12211210100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140358736815.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12211210100121 its reverse (12100101211221), we get a palindrome (24311311311342).

Subtracting from 12211210100121 its reverse (12100101211221), we obtain a square (111108888900 = 333330²).

The spelling of 12211210100121 in words is "twelve trillion, two hundred eleven billion, two hundred ten million, one hundred thousand, one hundred twenty-one".