10556120501 has 2 divisors, whose sum is σ = 10556120502. Its totient is φ = 10556120500.

The previous prime is 10556120483. The next prime is 10556120513. The reversal of 10556120501 is 10502165501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10200798001 + 355322500 = 100999^2 + 18850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10556120501 is a prime.

It is a super-2 number, since 2×10556120501² (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 (10556120581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278060250 + 5278060251.

It is an arithmetic number, because the mean of its divisors is an integer number (5278060251).

Almost surely, 2^10556120501 is an apocalyptic number.

It is an amenable number.

10556120501 is a deficient number, since it is larger than the sum of its proper divisors (1).

10556120501 is an equidigital number, since it uses as much as digits as its factorization.

10556120501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 10556120501 in words is "ten billion, five hundred fifty-six million, one hundred twenty thousand, five hundred one".