10122220111217 has 2 divisors, whose sum is σ = 10122220111218. Its totient is φ = 10122220111216.

The previous prime is 10122220111163. The next prime is 10122220111249. The reversal of 10122220111217 is 71211102222101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8074241593441 + 2047978517776 = 2841521^2 + 1431076^2 .

It is an emirp because it is prime and its reverse (71211102222101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10122220111217 - 2¹² = 10122220107121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10122220111192 and 10122220111201.

It is not a weakly prime, because it can be changed into another prime (10122225111217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061110055608 + 5061110055609.

It is an arithmetic number, because the mean of its divisors is an integer number (5061110055609).

Almost surely, 2^{10122220111217} is an apocalyptic number.

It is an amenable number.

10122220111217 is a deficient number, since it is larger than the sum of its proper divisors (1).

10122220111217 is an equidigital number, since it uses as much as digits as its factorization.

10122220111217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 10122220111217 its reverse (71211102222101), we get a palindrome (81333322333318).

The spelling of 10122220111217 in words is "ten trillion, one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, two hundred seventeen".