222212444401 has 4 divisors (see below), whose sum is σ = 222213392500. Its totient is φ = 222211496304.

The previous prime is 222212444387. The next prime is 222212444429. The reversal of 222212444401 is 104444212222.

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 91059097600 + 131153346801 = 301760^2 + 362151^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212444401 - 2¹⁵ = 222212411633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222212444401.

It is not an unprimeable number, because it can be changed into a prime (222212444431) 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, 161875 + ... + 686023.

It is an arithmetic number, because the mean of its divisors is an integer number (55553348125).

Almost surely, 2^222212444401 is an apocalyptic number.

It is an amenable number.

222212444401 is a deficient number, since it is larger than the sum of its proper divisors (948099).

222212444401 is an equidigital number, since it uses as much as digits as its factorization.

222212444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948098.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 222212444401 its reverse (104444212222), we get a palindrome (326656656623).

The spelling of 222212444401 in words is "two hundred twenty-two billion, two hundred twelve million, four hundred forty-four thousand, four hundred one".