20101220120011 has 2 divisors, whose sum is σ = 20101220120012. Its totient is φ = 20101220120010.

The previous prime is 20101220119969. The next prime is 20101220120017. The reversal of 20101220120011 is 11002102210102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20101220120011 - 2¹⁷ = 20101219988939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20101220119973 and 20101220120000.

It is not a weakly prime, because it can be changed into another prime (20101220120017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050610060005 + 10050610060006.

It is an arithmetic number, because the mean of its divisors is an integer number (10050610060006).

Almost surely, 2^{20101220120011} is an apocalyptic number.

20101220120011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101220120011 is an equidigital number, since it uses as much as digits as its factorization.

20101220120011 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 20101220120011 its reverse (11002102210102), we get a palindrome (31103322330113).

The spelling of 20101220120011 in words is "twenty trillion, one hundred one billion, two hundred twenty million, one hundred twenty thousand, eleven".