231222021231211 has 12 divisors (see below), whose sum is σ = 231600156131232. Its totient is φ = 230844501940208.

The previous prime is 231222021231169. The next prime is 231222021231247. The reversal of 231222021231211 is 112132120222132.

It is not a de Polignac number, because 231222021231211 - 2²⁹ = 231221484360299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231222021231251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7858532046 + ... + 7858561468.

It is an arithmetic number, because the mean of its divisors is an integer number (19300013010936).

Almost surely, 2^{231222021231211} is an apocalyptic number.

231222021231211 is a deficient number, since it is larger than the sum of its proper divisors (378134900021).

231222021231211 is an frugal number, since it uses more digits than its factorization.

231222021231211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49490 (or 48843 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 231222021231211 its reverse (112132120222132), we get a palindrome (343354141453343).

The spelling of 231222021231211 in words is "two hundred thirty-one trillion, two hundred twenty-two billion, twenty-one million, two hundred thirty-one thousand, two hundred eleven".