122100012217 has 2 divisors, whose sum is σ = 122100012218. Its totient is φ = 122100012216.

The previous prime is 122100012191. The next prime is 122100012269. The reversal of 122100012217 is 712210001221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120967622416 + 1132389801 = 347804^2 + 33651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122100012217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122100012194 and 122100012203.

It is not a weakly prime, because it can be changed into another prime (122100012317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050006108 + 61050006109.

It is an arithmetic number, because the mean of its divisors is an integer number (61050006109).

Almost surely, 2^122100012217 is an apocalyptic number.

It is an amenable number.

122100012217 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100012217 is an equidigital number, since it uses as much as digits as its factorization.

122100012217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 122100012217 its reverse (712210001221), we get a palindrome (834310013438).

The spelling of 122100012217 in words is "one hundred twenty-two billion, one hundred million, twelve thousand, two hundred seventeen".