111012201002221 has 2 divisors, whose sum is σ = 111012201002222. Its totient is φ = 111012201002220.

The previous prime is 111012201002179. The next prime is 111012201002237. The reversal of 111012201002221 is 122200102210111.

It is an a-pointer prime, because the next prime (111012201002237) can be obtained adding 111012201002221 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106752579708996 + 4259621293225 = 10332114^2 + 2063885^2 .

It is a cyclic number.

It is not a de Polignac number, because 111012201002221 - 2¹⁹ = 111012200477933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111012201002195 and 111012201002204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111012201002621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506100501110 + 55506100501111.

It is an arithmetic number, because the mean of its divisors is an integer number (55506100501111).

Almost surely, 2^{111012201002221} is an apocalyptic number.

It is an amenable number.

111012201002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012201002221 is an equidigital number, since it uses as much as digits as its factorization.

111012201002221 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 16.

Adding to 111012201002221 its reverse (122200102210111), we get a palindrome (233212303212332).

It can be divided in two parts, 11101220 and 1002221, that added together give a square (12103441 = 3479²).

The spelling of 111012201002221 in words is "one hundred eleven trillion, twelve billion, two hundred one million, two thousand, two hundred twenty-one".