12242420549 has 2 divisors, whose sum is σ = 12242420550. Its totient is φ = 12242420548.

The previous prime is 12242420513. The next prime is 12242420627. The reversal of 12242420549 is 94502424221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11421196900 + 821223649 = 106870^2 + 28657^2 .

It is a cyclic number.

It is not a de Polignac number, because 12242420549 - 2²⁰ = 12241371973 is a prime.

It is a super-2 number, since 2×12242420549² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12242420849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6121210274 + 6121210275.

It is an arithmetic number, because the mean of its divisors is an integer number (6121210275).

Almost surely, 2^12242420549 is an apocalyptic number.

It is an amenable number.

12242420549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12242420549 is an equidigital number, since it uses as much as digits as its factorization.

12242420549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 12242420549 in words is "twelve billion, two hundred forty-two million, four hundred twenty thousand, five hundred forty-nine".