12022561209889 has 2 divisors, whose sum is σ = 12022561209890. Its totient is φ = 12022561209888.

The previous prime is 12022561209809. The next prime is 12022561209907. The reversal of 12022561209889 is 98890216522021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11855509171489 + 167052038400 = 3443183^2 + 408720^2 .

It is a cyclic number.

It is not a de Polignac number, because 12022561209889 - 2¹¹ = 12022561207841 is a prime.

It is a super-2 number, since 2×12022561209889² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12022561209809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011280604944 + 6011280604945.

It is an arithmetic number, because the mean of its divisors is an integer number (6011280604945).

Almost surely, 2^{12022561209889} is an apocalyptic number.

It is an amenable number.

12022561209889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12022561209889 is an equidigital number, since it uses as much as digits as its factorization.

12022561209889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 12022561209889 in words is "twelve trillion, twenty-two billion, five hundred sixty-one million, two hundred nine thousand, eight hundred eighty-nine".