12000212220001 has 4 divisors (see below), whose sum is σ = 12000219454404. Its totient is φ = 12000204985600.

The previous prime is 12000212219987. The next prime is 12000212220097. The reversal of 12000212220001 is 10002221200021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5824982250000 + 6175229970001 = 2413500^2 + 2485001^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000212220001 - 2¹¹ = 12000212217953 is a prime.

It is a super-2 number, since 2×12000212220001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000212220401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246921 + ... + 4905241.

It is an arithmetic number, because the mean of its divisors is an integer number (3000054863601).

Almost surely, 2^{12000212220001} is an apocalyptic number.

It is an amenable number.

12000212220001 is a deficient number, since it is larger than the sum of its proper divisors (7234403).

12000212220001 is an equidigital number, since it uses as much as digits as its factorization.

12000212220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234402.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12000212220001 its reverse (10002221200021), we get a palindrome (22002433420022).

The spelling of 12000212220001 in words is "twelve trillion, two hundred twelve million, two hundred twenty thousand, one".