222221200001 has 4 divisors (see below), whose sum is σ = 224421410004. Its totient is φ = 220020990000.

The previous prime is 222221199983. The next prime is 222221200031. The reversal of 222221200001 is 100002122222.

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 205028745601 + 17192454400 = 452801^2 + 131120^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221200001 - 2¹⁰ = 222221198977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221200031) 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, 1100104850 + ... + 1100105051.

It is an arithmetic number, because the mean of its divisors is an integer number (56105352501).

Almost surely, 2^222221200001 is an apocalyptic number.

It is an amenable number.

222221200001 is a deficient number, since it is larger than the sum of its proper divisors (2200210003).

222221200001 is a wasteful number, since it uses less digits than its factorization.

222221200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200210002.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222221200001 its reverse (100002122222), we get a palindrome (322223322223).

The spelling of 222221200001 in words is "two hundred twenty-two billion, two hundred twenty-one million, two hundred thousand, one".