1111110440221 has 2 divisors, whose sum is σ = 1111110440222. Its totient is φ = 1111110440220.

The previous prime is 1111110440191. The next prime is 1111110440257. The reversal of 1111110440221 is 1220440111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044768135321 + 66342304900 = 1022139^2 + 257570^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111110440221 - 2¹⁵ = 1111110407453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111110740221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555555220110 + 555555220111.

It is an arithmetic number, because the mean of its divisors is an integer number (555555220111).

Almost surely, 2^{1111110440221} is an apocalyptic number.

It is an amenable number.

1111110440221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111110440221 is an equidigital number, since it uses as much as digits as its factorization.

1111110440221 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 19.

Adding to 1111110440221 its reverse (1220440111111), we get a palindrome (2331550551332).

The spelling of 1111110440221 in words is "one trillion, one hundred eleven billion, one hundred ten million, four hundred forty thousand, two hundred twenty-one".