222221111102201 has 2 divisors, whose sum is σ = 222221111102202. Its totient is φ = 222221111102200.

The previous prime is 222221111102171. The next prime is 222221111102219. The reversal of 222221111102201 is 102201111122222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218078465550400 + 4142645551801 = 14767480^2 + 2035349^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221111102201 - 2²² = 222221106907897 is a prime.

It is not a weakly prime, because it can be changed into another prime (222221111102281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110555551100 + 111110555551101.

It is an arithmetic number, because the mean of its divisors is an integer number (111110555551101).

Almost surely, 2^{222221111102201} is an apocalyptic number.

It is an amenable number.

222221111102201 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221111102201 is an equidigital number, since it uses as much as digits as its factorization.

222221111102201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222221111102201 its reverse (102201111122222), we get a palindrome (324422222224423).

The spelling of 222221111102201 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred two thousand, two hundred one".