22201221001 has 2 divisors, whose sum is σ = 22201221002. Its totient is φ = 22201221000.

The previous prime is 22201220983. The next prime is 22201221019. The reversal of 22201221001 is 10012210222.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (22201220983) and next prime (22201221019).

It can be written as a sum of positive squares in only one way, i.e., 17239427401 + 4961793600 = 131299^2 + 70440^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201221001 - 2¹⁷ = 22201089929 is a prime.

It is not a weakly prime, because it can be changed into another prime (22201221901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100610500 + 11100610501.

It is an arithmetic number, because the mean of its divisors is an integer number (11100610501).

Almost surely, 2^22201221001 is an apocalyptic number.

It is an amenable number.

22201221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201221001 is an equidigital number, since it uses as much as digits as its factorization.

22201221001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22201221001 its reverse (10012210222), we get a palindrome (32213431223).

It can be divided in two parts, 2220 and 1221001, that added together give a palindrome (1223221).

The spelling of 22201221001 in words is "twenty-two billion, two hundred one million, two hundred twenty-one thousand, one".