2218136556011 has 2 divisors, whose sum is σ = 2218136556012. Its totient is φ = 2218136556010.

The previous prime is 2218136555993. The next prime is 2218136556019. The reversal of 2218136556011 is 1106556318122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2218136556011 - 2¹⁰ = 2218136554987 is a prime.

It is a super-2 number, since 2×2218136556011² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2218136556011.

It is not a weakly prime, because it can be changed into another prime (2218136556019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109068278005 + 1109068278006.

It is an arithmetic number, because the mean of its divisors is an integer number (1109068278006).

Almost surely, 2^{2218136556011} is an apocalyptic number.

2218136556011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218136556011 is an equidigital number, since it uses as much as digits as its factorization.

2218136556011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 2218136556011 in words is "two trillion, two hundred eighteen billion, one hundred thirty-six million, five hundred fifty-six thousand, eleven".