11211020211133 has 2 divisors, whose sum is σ = 11211020211134. Its totient is φ = 11211020211132.

The previous prime is 11211020211121. The next prime is 11211020211143. The reversal of 11211020211133 is 33111202011211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9943509008889 + 1267511202244 = 3153333^2 + 1125838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211020211133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211020211133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211020211103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605510105566 + 5605510105567.

It is an arithmetic number, because the mean of its divisors is an integer number (5605510105567).

Almost surely, 2^{11211020211133} is an apocalyptic number.

It is an amenable number.

11211020211133 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211020211133 is an equidigital number, since it uses as much as digits as its factorization.

11211020211133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11211020211133 its reverse (33111202011211), we get a palindrome (44322222222344).

The spelling of 11211020211133 in words is "eleven trillion, two hundred eleven billion, twenty million, two hundred eleven thousand, one hundred thirty-three".