12222222120001 has 4 divisors (see below), whose sum is σ = 12941176362372. Its totient is φ = 11503267877632.

The previous prime is 12222222119983. The next prime is 12222222120007. The reversal of 12222222120001 is 10002122222221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8077964414976 + 4144257705025 = 2842176^2 + 2035745^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222222120001 - 2⁵ = 12222222119969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222222120007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359477121160 + ... + 359477121193.

It is an arithmetic number, because the mean of its divisors is an integer number (3235294090593).

Almost surely, 2^{12222222120001} is an apocalyptic number.

It is an amenable number.

12222222120001 is a deficient number, since it is larger than the sum of its proper divisors (718954242371).

12222222120001 is an equidigital number, since it uses as much as digits as its factorization.

12222222120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718954242370.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12222222120001 its reverse (10002122222221), we get a palindrome (22224344342222).

The spelling of 12222222120001 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, one".