22012121017 has 2 divisors, whose sum is σ = 22012121018. Its totient is φ = 22012121016.

The previous prime is 22012120987. The next prime is 22012121029. The reversal of 22012121017 is 71012121022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11282475961 + 10729645056 = 106219^2 + 103584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012121017 is a prime.

It is a super-2 number, since 2×22012121017² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22012120985 and 22012121003.

It is not a weakly prime, because it can be changed into another prime (22012121317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006060508 + 11006060509.

It is an arithmetic number, because the mean of its divisors is an integer number (11006060509).

Almost surely, 2^22012121017 is an apocalyptic number.

It is an amenable number.

22012121017 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012121017 is an equidigital number, since it uses as much as digits as its factorization.

22012121017 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 22012121017 its reverse (71012121022), we get a palindrome (93024242039).

The spelling of 22012121017 in words is "twenty-two billion, twelve million, one hundred twenty-one thousand, seventeen".