20221201120217 has 2 divisors, whose sum is σ = 20221201120218. Its totient is φ = 20221201120216.

The previous prime is 20221201120051. The next prime is 20221201120271. The reversal of 20221201120217 is 71202110212202.

Together with next prime (20221201120271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19724825917696 + 496375202521 = 4441264^2 + 704539^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221201120217 - 2⁸ = 20221201119961 is a prime.

It is a super-2 number, since 2×20221201120217² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20221201120192 and 20221201120201.

It is not a weakly prime, because it can be changed into another prime (20221201180217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110600560108 + 10110600560109.

It is an arithmetic number, because the mean of its divisors is an integer number (10110600560109).

Almost surely, 2^{20221201120217} is an apocalyptic number.

It is an amenable number.

20221201120217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221201120217 is an equidigital number, since it uses as much as digits as its factorization.

20221201120217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 20221201120217 its reverse (71202110212202), we get a palindrome (91423311332419).

The spelling of 20221201120217 in words is "twenty trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty thousand, two hundred seventeen".