222111331201 has 4 divisors (see below), whose sum is σ = 222112446804. Its totient is φ = 222110215600.

The previous prime is 222111331199. The next prime is 222111331213. The reversal of 222111331201 is 102133111222.

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 122394322801 + 99717008400 = 349849^2 + 315780^2 .

It is a cyclic number.

It is not a de Polignac number, because 222111331201 - 2¹ = 222111331199 is a prime.

It is a super-2 number, since 2×222111331201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222111331231) 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 3 ways as a sum of consecutive naturals, for example, 168670 + ... + 687511.

It is an arithmetic number, because the mean of its divisors is an integer number (55528111701).

Almost surely, 2^222111331201 is an apocalyptic number.

It is an amenable number.

222111331201 is a deficient number, since it is larger than the sum of its proper divisors (1115603).

222111331201 is an equidigital number, since it uses as much as digits as its factorization.

222111331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115602.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 222111331201 its reverse (102133111222), we get a palindrome (324244442423).

The spelling of 222111331201 in words is "two hundred twenty-two billion, one hundred eleven million, three hundred thirty-one thousand, two hundred one".