2031211111211 has 4 divisors (see below), whose sum is σ = 2031217309800. Its totient is φ = 2031204912624.

The previous prime is 2031211111199. The next prime is 2031211111217. The reversal of 2031211111211 is 1121111121302.

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 2031211111211 - 2¹⁴ = 2031211094827 is a prime.

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 2031211111211.

It is not an unprimeable number, because it can be changed into a prime (2031211111217) 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, 2578601 + ... + 3272858.

It is an arithmetic number, because the mean of its divisors is an integer number (507804327450).

Almost surely, 2^{2031211111211} is an apocalyptic number.

2031211111211 is a deficient number, since it is larger than the sum of its proper divisors (6198589).

2031211111211 is an equidigital number, since it uses as much as digits as its factorization.

2031211111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198588.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 2031211111211 its reverse (1121111121302), we get a palindrome (3152322232513).

The spelling of 2031211111211 in words is "two trillion, thirty-one billion, two hundred eleven million, one hundred eleven thousand, two hundred eleven".