2221221103201 has 2 divisors, whose sum is σ = 2221221103202. Its totient is φ = 2221221103200.

The previous prime is 2221221103139. The next prime is 2221221103219. The reversal of 2221221103201 is 1023011221222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1667649390625 + 553571712576 = 1291375^2 + 744024^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221221103201 - 2¹¹ = 2221221101153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221221103001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110610551600 + 1110610551601.

It is an arithmetic number, because the mean of its divisors is an integer number (1110610551601).

Almost surely, 2^{2221221103201} is an apocalyptic number.

It is an amenable number.

2221221103201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221221103201 is an equidigital number, since it uses as much as digits as its factorization.

2221221103201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2221221103201 its reverse (1023011221222), we get a palindrome (3244232324423).

The spelling of 2221221103201 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred three thousand, two hundred one".