12040221547 has 2 divisors, whose sum is σ = 12040221548. Its totient is φ = 12040221546.

The previous prime is 12040221517. The next prime is 12040221607. The reversal of 12040221547 is 74512204021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12040221547 is a prime.

It is not a weakly prime, because it can be changed into another prime (12040221517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6020110773 + 6020110774.

It is an arithmetic number, because the mean of its divisors is an integer number (6020110774).

Almost surely, 2^12040221547 is an apocalyptic number.

12040221547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12040221547 is an equidigital number, since it uses as much as digits as its factorization.

12040221547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 12040221547 its reverse (74512204021), we get a palindrome (86552425568).

The spelling of 12040221547 in words is "twelve billion, forty million, two hundred twenty-one thousand, five hundred forty-seven".