111120022002221 has 2 divisors, whose sum is σ = 111120022002222. Its totient is φ = 111120022002220.

The previous prime is 111120022002191. The next prime is 111120022002277. The reversal of 111120022002221 is 122200220021111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105252436266121 + 5867585736100 = 10259261^2 + 2422310^2 .

It is a cyclic number.

It is not a de Polignac number, because 111120022002221 - 2²² = 111120017807917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111120022002221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111120022004221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560011001110 + 55560011001111.

It is an arithmetic number, because the mean of its divisors is an integer number (55560011001111).

Almost surely, 2^{111120022002221} is an apocalyptic number.

It is an amenable number.

111120022002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120022002221 is an equidigital number, since it uses as much as digits as its factorization.

111120022002221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111120022002221 its reverse (122200220021111), we get a palindrome (233320242023332).

The spelling of 111120022002221 in words is "one hundred eleven trillion, one hundred twenty billion, twenty-two million, two thousand, two hundred twenty-one".