111020100012221 has 2 divisors, whose sum is σ = 111020100012222. Its totient is φ = 111020100012220.

The previous prime is 111020100012193. The next prime is 111020100012271. The reversal of 111020100012221 is 122210001020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61793528704996 + 49226571307225 = 7860886^2 + 7016165^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020100012221 - 2¹⁴ = 111020099995837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111020100012196 and 111020100012205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020100012271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510050006110 + 55510050006111.

It is an arithmetic number, because the mean of its divisors is an integer number (55510050006111).

Almost surely, 2^{111020100012221} is an apocalyptic number.

It is an amenable number.

111020100012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020100012221 is an equidigital number, since it uses as much as digits as its factorization.

111020100012221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111020100012221 its reverse (122210001020111), we get a palindrome (233230101032332).

The spelling of 111020100012221 in words is "one hundred eleven trillion, twenty billion, one hundred million, twelve thousand, two hundred twenty-one".