2011111021203 has 4 divisors (see below), whose sum is σ = 2681481361608. Its totient is φ = 1340740680800.

The previous prime is 2011111021193. The next prime is 2011111021289. The reversal of 2011111021203 is 3021201111102.

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 2011111021203 - 2¹⁸ = 2011110759059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011111021103) 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, 335185170198 + ... + 335185170203.

It is an arithmetic number, because the mean of its divisors is an integer number (670370340402).

Almost surely, 2^{2011111021203} is an apocalyptic number.

2011111021203 is a deficient number, since it is larger than the sum of its proper divisors (670370340405).

2011111021203 is an equidigital number, since it uses as much as digits as its factorization.

2011111021203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670370340404.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2011111021203 its reverse (3021201111102), we get a palindrome (5032312132305).

The spelling of 2011111021203 in words is "two trillion, eleven billion, one hundred eleven million, twenty-one thousand, two hundred three".