222201110001001 has 2 divisors, whose sum is σ = 222201110001002. Its totient is φ = 222201110001000.

The previous prime is 222201110000993. The next prime is 222201110001061. The reversal of 222201110001001 is 100100011102222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191367077935401 + 30834032065600 = 13833549^2 + 5552840^2 .

It is a cyclic number.

It is not a de Polignac number, because 222201110001001 - 2³ = 222201110000993 is a prime.

It is not a weakly prime, because it can be changed into another prime (222201110001061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100555000500 + 111100555000501.

It is an arithmetic number, because the mean of its divisors is an integer number (111100555000501).

Almost surely, 2^{222201110001001} is an apocalyptic number.

It is an amenable number.

222201110001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222201110001001 is an equidigital number, since it uses as much as digits as its factorization.

222201110001001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 222201110001001 its reverse (100100011102222), we get a palindrome (322301121103223).

The spelling of 222201110001001 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred ten million, one thousand, one".