111022221010121 has 2 divisors, whose sum is σ = 111022221010122. Its totient is φ = 111022221010120.

The previous prime is 111022221010097. The next prime is 111022221010159. The reversal of 111022221010121 is 121010122220111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92043607972096 + 18978613038025 = 9593936^2 + 4356445^2 .

It is a cyclic number.

It is not a de Polignac number, because 111022221010121 - 2¹⁴ = 111022220993737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111022221010121.

It is not a weakly prime, because it can be changed into another prime (111022221010021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511110505060 + 55511110505061.

It is an arithmetic number, because the mean of its divisors is an integer number (55511110505061).

Almost surely, 2^{111022221010121} is an apocalyptic number.

It is an amenable number.

111022221010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022221010121 is an equidigital number, since it uses as much as digits as its factorization.

111022221010121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111022221010121 its reverse (121010122220111), we get a palindrome (232032343230232).

The spelling of 111022221010121 in words is "one hundred eleven trillion, twenty-two billion, two hundred twenty-one million, ten thousand, one hundred twenty-one".