222040001 has 2 divisors, whose sum is σ = 222040002. Its totient is φ = 222040000.

The previous prime is 222039989. The next prime is 222040057. The reversal of 222040001 is 100040222.

222040001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115455025 + 106584976 = 10745^2 + 10324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222040001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (222040601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111020000 + 111020001.

It is an arithmetic number, because the mean of its divisors is an integer number (111020001).

Almost surely, 2^222040001 is an apocalyptic number.

It is an amenable number.

222040001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222040001 is an equidigital number, since it uses as much as digits as its factorization.

222040001 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 222040001 is about 14901.0067109575. The cubic root of 222040001 is about 605.5412600365.

Adding to 222040001 its reverse (100040222), we get a palindrome (322080223).

The spelling of 222040001 in words is "two hundred twenty-two million, forty thousand, one".