12120226553 has 2 divisors, whose sum is σ = 12120226554. Its totient is φ = 12120226552.

The previous prime is 12120226523. The next prime is 12120226631. The reversal of 12120226553 is 35562202121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6128228089 + 5991998464 = 78283^2 + 77408^2 .

It is an emirp because it is prime and its reverse (35562202121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12120226553 - 2²⁸ = 11851791097 is a prime.

It is not a weakly prime, because it can be changed into another prime (12120226513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060113276 + 6060113277.

It is an arithmetic number, because the mean of its divisors is an integer number (6060113277).

Almost surely, 2^12120226553 is an apocalyptic number.

It is an amenable number.

12120226553 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120226553 is an equidigital number, since it uses as much as digits as its factorization.

12120226553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 12120226553 its reverse (35562202121), we get a palindrome (47682428674).

The spelling of 12120226553 in words is "twelve billion, one hundred twenty million, two hundred twenty-six thousand, five hundred fifty-three".