20111220200011 has 2 divisors, whose sum is σ = 20111220200012. Its totient is φ = 20111220200010.

The previous prime is 20111220199999. The next prime is 20111220200023. The reversal of 20111220200011 is 11000202211102.

It is a balanced prime because it is at equal distance from previous prime (20111220199999) and next prime (20111220200023).

It is a cyclic number.

It is not a de Polignac number, because 20111220200011 - 2⁷ = 20111220199883 is a prime.

It is a super-2 number, since 2×20111220200011² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111220199964 and 20111220200000.

It is not a weakly prime, because it can be changed into another prime (20111220200311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055610100005 + 10055610100006.

It is an arithmetic number, because the mean of its divisors is an integer number (10055610100006).

Almost surely, 2^{20111220200011} is an apocalyptic number.

20111220200011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111220200011 is an equidigital number, since it uses as much as digits as its factorization.

20111220200011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20111220200011 its reverse (11000202211102), we get a palindrome (31111422411113).

The spelling of 20111220200011 in words is "twenty trillion, one hundred eleven billion, two hundred twenty million, two hundred thousand, eleven".