111010021217 has 2 divisors, whose sum is σ = 111010021218. Its totient is φ = 111010021216.

The previous prime is 111010021159. The next prime is 111010021261. The reversal of 111010021217 is 712120010111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73525576336 + 37484444881 = 271156^2 + 193609^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010021217 - 2¹⁰ = 111010020193 is a prime.

It is a super-2 number, since 2×111010021217² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111010021195 and 111010021204.

It is not a weakly prime, because it can be changed into another prime (111010021277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505010608 + 55505010609.

It is an arithmetic number, because the mean of its divisors is an integer number (55505010609).

Almost surely, 2^111010021217 is an apocalyptic number.

It is an amenable number.

111010021217 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010021217 is an equidigital number, since it uses as much as digits as its factorization.

111010021217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 111010021217 its reverse (712120010111), we get a palindrome (823130031328).

The spelling of 111010021217 in words is "one hundred eleven billion, ten million, twenty-one thousand, two hundred seventeen".