231022211231111 has 4 divisors (see below), whose sum is σ = 231022245118992. Its totient is φ = 231022177343232.

The previous prime is 231022211231093. The next prime is 231022211231183. The reversal of 231022211231111 is 111132112220132.

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 231022211231111 - 2²⁶ = 231022144122247 is a prime.

It is a super-2 number, since 2×231022211231111² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231022211231611) 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, 2760506 + ... + 21671751.

It is an arithmetic number, because the mean of its divisors is an integer number (57755561279748).

Almost surely, 2^{231022211231111} is an apocalyptic number.

231022211231111 is a deficient number, since it is larger than the sum of its proper divisors (33887881).

231022211231111 is an equidigital number, since it uses as much as digits as its factorization.

231022211231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33887880.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 231022211231111 its reverse (111132112220132), we get a palindrome (342154323451243).

The spelling of 231022211231111 in words is "two hundred thirty-one trillion, twenty-two billion, two hundred eleven million, two hundred thirty-one thousand, one hundred eleven".