220222001 has 2 divisors, whose sum is σ = 220222002. Its totient is φ = 220222000.

The previous prime is 220221997. The next prime is 220222003. The reversal of 220222001 is 100222022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139240000 + 80982001 = 11800^2 + 8999^2 .

It is a cyclic number.

It is not a de Polignac number, because 220222001 - 2² = 220221997 is a prime.

Together with 220222003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220222003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110111000 + 110111001.

It is an arithmetic number, because the mean of its divisors is an integer number (110111001).

Almost surely, 2^220222001 is an apocalyptic number.

It is an amenable number.

220222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220222001 is an equidigital number, since it uses as much as digits as its factorization.

220222001 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 11.

The square root of 220222001 is about 14839.8787393968. The cubic root of 220222001 is about 603.8840626925.

Adding to 220222001 its reverse (100222022), we get a palindrome (320444023).

The spelling of 220222001 in words is "two hundred twenty million, two hundred twenty-two thousand, one".