22222122001 has 4 divisors (see below), whose sum is σ = 22988402100. Its totient is φ = 21455841904.

The previous prime is 22222121983. The next prime is 22222122023. The reversal of 22222122001 is 10022122222.

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 15863654401 + 6358467600 = 125951^2 + 79740^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222122001 - 2²⁷ = 22087904273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222128001) 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, 383140006 + ... + 383140063.

It is an arithmetic number, because the mean of its divisors is an integer number (5747100525).

Almost surely, 2^22222122001 is an apocalyptic number.

It is an amenable number.

22222122001 is a deficient number, since it is larger than the sum of its proper divisors (766280099).

22222122001 is an equidigital number, since it uses as much as digits as its factorization.

22222122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766280098.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22222122001 its reverse (10022122222), we get a palindrome (32244244223).

The spelling of 22222122001 in words is "twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one".