2031221223211 has 16 divisors (see below), whose sum is σ = 2152931123200. Its totient is φ = 1911010187808.

The previous prime is 2031221223209. The next prime is 2031221223217. The reversal of 2031221223211 is 1123221221302.

It is a cyclic number.

It is not a de Polignac number, because 2031221223211 - 2¹ = 2031221223209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2031221223217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3704665 + ... + 4217461.

It is an arithmetic number, because the mean of its divisors is an integer number (134558195200).

Almost surely, 2^{2031221223211} is an apocalyptic number.

2031221223211 is a deficient number, since it is larger than the sum of its proper divisors (121709899989).

2031221223211 is a wasteful number, since it uses less digits than its factorization.

2031221223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514258.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2031221223211 its reverse (1123221221302), we get a palindrome (3154442444513).

The spelling of 2031221223211 in words is "two trillion, thirty-one billion, two hundred twenty-one million, two hundred twenty-three thousand, two hundred eleven".