2221121102071 has 2 divisors, whose sum is σ = 2221121102072. Its totient is φ = 2221121102070.

The previous prime is 2221121102059. The next prime is 2221121102107. The reversal of 2221121102071 is 1702011211222.

Together with next prime (2221121102107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221121102071 - 2¹⁹ = 2221120577783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221121102021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110560551035 + 1110560551036.

It is an arithmetic number, because the mean of its divisors is an integer number (1110560551036).

Almost surely, 2^{2221121102071} is an apocalyptic number.

2221121102071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221121102071 is an equidigital number, since it uses as much as digits as its factorization.

2221121102071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 2221121102071 its reverse (1702011211222), we get a palindrome (3923132313293).

The spelling of 2221121102071 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred two thousand, seventy-one".