2011020020111 has 8 divisors (see below), whose sum is σ = 2019011747424. Its totient is φ = 2003029585920.

The previous prime is 2011020020101. The next prime is 2011020020123. The reversal of 2011020020111 is 1110200201102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011020020111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011020020092 and 2011020020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020020101) 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 in 7 ways as a sum of consecutive naturals, for example, 2855171 + ... + 3489131.

It is an arithmetic number, because the mean of its divisors is an integer number (252376468428).

Almost surely, 2^{2011020020111} is an apocalyptic number.

2011020020111 is a deficient number, since it is larger than the sum of its proper divisors (7991727313).

2011020020111 is a wasteful number, since it uses less digits than its factorization.

2011020020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646561.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2011020020111 its reverse (1110200201102), we get a palindrome (3121220221213).

The spelling of 2011020020111 in words is "two trillion, eleven billion, twenty million, twenty thousand, one hundred eleven".