11212020100111 has 2 divisors, whose sum is σ = 11212020100112. Its totient is φ = 11212020100110.

The previous prime is 11212020100103. The next prime is 11212020100123. The reversal of 11212020100111 is 11100102021211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11212020100111 - 2³ = 11212020100103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212020100091 and 11212020100100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212020100711) 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, 5606010050055 + 5606010050056.

It is an arithmetic number, because the mean of its divisors is an integer number (5606010050056).

Almost surely, 2^{11212020100111} is an apocalyptic number.

11212020100111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212020100111 is an equidigital number, since it uses as much as digits as its factorization.

11212020100111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11212020100111 its reverse (11100102021211), we get a palindrome (22312122121322).

The spelling of 11212020100111 in words is "eleven trillion, two hundred twelve billion, twenty million, one hundred thousand, one hundred eleven".