222001021001 has 2 divisors, whose sum is σ = 222001021002. Its totient is φ = 222001021000.

The previous prime is 222001020991. The next prime is 222001021003. The reversal of 222001021001 is 100120100222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129538807225 + 92462213776 = 359915^2 + 304076^2 .

It is a cyclic number.

It is not a de Polignac number, because 222001021001 - 2⁶ = 222001020937 is a prime.

Together with 222001021003, 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 (222001021003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000510500 + 111000510501.

It is an arithmetic number, because the mean of its divisors is an integer number (111000510501).

Almost surely, 2^222001021001 is an apocalyptic number.

It is an amenable number.

222001021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222001021001 is an equidigital number, since it uses as much as digits as its factorization.

222001021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 222001021001 its reverse (100120100222), we get a palindrome (322121121223).

The spelling of 222001021001 in words is "two hundred twenty-two billion, one million, twenty-one thousand, one".