2103031220111 has 4 divisors (see below), whose sum is σ = 2103408586392. Its totient is φ = 2102653853832.

The previous prime is 2103031220021. The next prime is 2103031220117. The reversal of 2103031220111 is 1110221303012.

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-2103031220111 is a prime.

It is a super-2 number, since 2×2103031220111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103031220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103031220117) 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, 188674781 + ... + 188685926.

It is an arithmetic number, because the mean of its divisors is an integer number (525852146598).

Almost surely, 2^{2103031220111} is an apocalyptic number.

2103031220111 is a deficient number, since it is larger than the sum of its proper divisors (377366281).

2103031220111 is an equidigital number, since it uses as much as digits as its factorization.

2103031220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377366280.

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

Adding to 2103031220111 its reverse (1110221303012), we get a palindrome (3213252523123).

The spelling of 2103031220111 in words is "two trillion, one hundred three billion, thirty-one million, two hundred twenty thousand, one hundred eleven".