18222086212549 has 2 divisors, whose sum is σ = 18222086212550. Its totient is φ = 18222086212548.

The previous prime is 18222086212531. The next prime is 18222086212567. The reversal of 18222086212549 is 94521268022281.

It is a balanced prime because it is at equal distance from previous prime (18222086212531) and next prime (18222086212567).

It can be written as a sum of positive squares in only one way, i.e., 10144269590049 + 8077816622500 = 3185007^2 + 2842150^2 .

It is a cyclic number.

It is not a de Polignac number, because 18222086212549 - 2²⁹ = 18221549341637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18222086212496 and 18222086212505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18222086212579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9111043106274 + 9111043106275.

It is an arithmetic number, because the mean of its divisors is an integer number (9111043106275).

Almost surely, 2^{18222086212549} is an apocalyptic number.

It is an amenable number.

18222086212549 is a deficient number, since it is larger than the sum of its proper divisors (1).

18222086212549 is an equidigital number, since it uses as much as digits as its factorization.

18222086212549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 18222086212549 in words is "eighteen trillion, two hundred twenty-two billion, eighty-six million, two hundred twelve thousand, five hundred forty-nine".