2231221312211 has 32 divisors (see below), whose sum is σ = 2408043800448. Its totient is φ = 2059873320960.

The previous prime is 2231221312181. The next prime is 2231221312223. The reversal of 2231221312211 is 1122131221322.

It is not a de Polignac number, because 2231221312211 - 2¹⁴ = 2231221295827 is a prime.

It is a super-3 number, since 3×2231221312211³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231221312291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463194875 + ... + 463199691.

It is an arithmetic number, because the mean of its divisors is an integer number (75251368764).

Almost surely, 2^{2231221312211} is an apocalyptic number.

2231221312211 is a deficient number, since it is larger than the sum of its proper divisors (176822488237).

2231221312211 is a wasteful number, since it uses less digits than its factorization.

2231221312211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391.

The product of its digits is 576, while the sum is 23.

Adding to 2231221312211 its reverse (1122131221322), we get a palindrome (3353352533533).

The spelling of 2231221312211 in words is "two trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twelve thousand, two hundred eleven".