222211110001 has 12 divisors (see below), whose sum is σ = 242608950900. Its totient is φ = 203256613728.

The previous prime is 222211109969. The next prime is 222211110029. The reversal of 222211110001 is 100011112222.

It can be written as a sum of positive squares in 2 ways, for example, as 129841312225 + 92369797776 = 360335^2 + 303924^2 .

It is not a de Polignac number, because 222211110001 - 2⁵ = 222211109969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222211110601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10602346 + ... + 10623283.

It is an arithmetic number, because the mean of its divisors is an integer number (20217412575).

Almost surely, 2^222211110001 is an apocalyptic number.

It is an amenable number.

222211110001 is a deficient number, since it is larger than the sum of its proper divisors (20397840899).

222211110001 is a wasteful number, since it uses less digits than its factorization.

222211110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21225696 (or 21225677 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 222211110001 its reverse (100011112222), we get a palindrome (322222222223).

The spelling of 222211110001 in words is "two hundred twenty-two billion, two hundred eleven million, one hundred ten thousand, one".