11212100205637 has 2 divisors, whose sum is σ = 11212100205638. Its totient is φ = 11212100205636.

The previous prime is 11212100205629. The next prime is 11212100205659. The reversal of 11212100205637 is 73650200121211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6007136294916 + 5204963910721 = 2450946^2 + 2281439^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212100205637 - 2³ = 11212100205629 is a prime.

It is a super-2 number, since 2×11212100205637² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11212100205599 and 11212100205608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212100205617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606050102818 + 5606050102819.

It is an arithmetic number, because the mean of its divisors is an integer number (5606050102819).

Almost surely, 2^{11212100205637} is an apocalyptic number.

It is an amenable number.

11212100205637 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212100205637 is an equidigital number, since it uses as much as digits as its factorization.

11212100205637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 11212100205637 its reverse (73650200121211), we get a palindrome (84862300326848).

The spelling of 11212100205637 in words is "eleven trillion, two hundred twelve billion, one hundred million, two hundred five thousand, six hundred thirty-seven".