2011103211023 has 4 divisors (see below), whose sum is σ = 2080451597640. Its totient is φ = 1941754824408.

The previous prime is 2011103210993. The next prime is 2011103211041. The reversal of 2011103211023 is 3201123011102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011103211023 is a prime.

It is a super-3 number, since 3×2011103211023³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011103210992 and 2011103211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011103211053) 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, 34674193265 + ... + 34674193322.

It is an arithmetic number, because the mean of its divisors is an integer number (520112899410).

Almost surely, 2^{2011103211023} is an apocalyptic number.

2011103211023 is a deficient number, since it is larger than the sum of its proper divisors (69348386617).

2011103211023 is an equidigital number, since it uses as much as digits as its factorization.

2011103211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69348386616.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2011103211023 its reverse (3201123011102), we get a palindrome (5212226222125).

The spelling of 2011103211023 in words is "two trillion, eleven billion, one hundred three million, two hundred eleven thousand, twenty-three".