12551540101 has 2 divisors, whose sum is σ = 12551540102. Its totient is φ = 12551540100.

The previous prime is 12551540077. The next prime is 12551540119. The reversal of 12551540101 is 10104515521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12365217601 + 186322500 = 111199^2 + 13650^2 .

It is a cyclic number.

It is not a de Polignac number, because 12551540101 - 2⁹ = 12551539589 is a prime.

It is a super-2 number, since 2×12551540101² (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 (12551540161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275770050 + 6275770051.

It is an arithmetic number, because the mean of its divisors is an integer number (6275770051).

Almost surely, 2^12551540101 is an apocalyptic number.

It is an amenable number.

12551540101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551540101 is an equidigital number, since it uses as much as digits as its factorization.

12551540101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 25.

The spelling of 12551540101 in words is "twelve billion, five hundred fifty-one million, five hundred forty thousand, one hundred one".