12222222221201 has 4 divisors (see below), whose sum is σ = 12230474904804. Its totient is φ = 12213969537600.

The previous prime is 12222222221179. The next prime is 12222222221213. The reversal of 12222222221201 is 10212222222221.

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 3651825450625 + 8570396770576 = 1910975^2 + 2927524^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222222221201 - 2¹⁰ = 12222222220177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222222221291) 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, 4126339580 + ... + 4126342541.

It is an arithmetic number, because the mean of its divisors is an integer number (3057618726201).

Almost surely, 2^{12222222221201} is an apocalyptic number.

It is an amenable number.

12222222221201 is a deficient number, since it is larger than the sum of its proper divisors (8252683603).

12222222221201 is an equidigital number, since it uses as much as digits as its factorization.

12222222221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252683602.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12222222221201 its reverse (10212222222221), we get a palindrome (22434444443422).

The spelling of 12222222221201 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred one".