2011020111103 has 4 divisors (see below), whose sum is σ = 2011123222840. Its totient is φ = 2010916999368.

The previous prime is 2011020111091. The next prime is 2011020111119. The reversal of 2011020111103 is 3011110201102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011020111103 - 2²¹ = 2011018013951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020111143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51526608 + ... + 51565621.

It is an arithmetic number, because the mean of its divisors is an integer number (502780805710).

Almost surely, 2^{2011020111103} is an apocalyptic number.

2011020111103 is a deficient number, since it is larger than the sum of its proper divisors (103111737).

2011020111103 is a wasteful number, since it uses less digits than its factorization.

2011020111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103111736.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 2011020111103 its reverse (3011110201102), we get a palindrome (5022130312205).

The spelling of 2011020111103 in words is "two trillion, eleven billion, twenty million, one hundred eleven thousand, one hundred three".