2211223203231 has 16 divisors (see below), whose sum is σ = 3385452096768. Its totient is φ = 1257567696000.

The previous prime is 2211223203221. The next prime is 2211223203239. The reversal of 2211223203231 is 1323023221122.

It is not a de Polignac number, because 2211223203231 - 2⁵ = 2211223203199 is a prime.

It is a super-3 number, since 3×2211223203231³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211223203239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249512970 + ... + 249521831.

It is an arithmetic number, because the mean of its divisors is an integer number (211590756048).

Almost surely, 2^{2211223203231} is an apocalyptic number.

2211223203231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2211223203231 is a deficient number, since it is larger than the sum of its proper divisors (1174228893537).

2211223203231 is a wasteful number, since it uses less digits than its factorization.

2211223203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499035022.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2211223203231 its reverse (1323023221122), we get a palindrome (3534246424353).

The spelling of 2211223203231 in words is "two trillion, two hundred eleven billion, two hundred twenty-three million, two hundred three thousand, two hundred thirty-one".