222201222021001 has 2 divisors, whose sum is σ = 222201222021002. Its totient is φ = 222201222021000.

The previous prime is 222201222020891. The next prime is 222201222021013. The reversal of 222201222021001 is 100120222102222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220728190741776 + 1473031279225 = 14856924^2 + 1213685^2 .

It is a cyclic number.

It is not a de Polignac number, because 222201222021001 - 2⁷ = 222201222020873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222201222021001.

It is not a weakly prime, because it can be changed into another prime (222201222021061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100611010500 + 111100611010501.

It is an arithmetic number, because the mean of its divisors is an integer number (111100611010501).

Almost surely, 2^{222201222021001} is an apocalyptic number.

It is an amenable number.

222201222021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222201222021001 is an equidigital number, since it uses as much as digits as its factorization.

222201222021001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222201222021001 its reverse (100120222102222), we get a palindrome (322321444123223).

The spelling of 222201222021001 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred twenty-two million, twenty-one thousand, one".