1011323212231 has 2 divisors, whose sum is σ = 1011323212232. Its totient is φ = 1011323212230.

The previous prime is 1011323212217. The next prime is 1011323212247. The reversal of 1011323212231 is 1322123231101.

It is a weak prime.

It is an emirp because it is prime and its reverse (1322123231101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011323212231 - 2⁷ = 1011323212103 is a prime.

It is a super-2 number, since 2×1011323212231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011323212201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505661606115 + 505661606116.

It is an arithmetic number, because the mean of its divisors is an integer number (505661606116).

Almost surely, 2^{1011323212231} is an apocalyptic number.

1011323212231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011323212231 is an equidigital number, since it uses as much as digits as its factorization.

1011323212231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1011323212231 its reverse (1322123231101), we get a palindrome (2333446443332).

The spelling of 1011323212231 in words is "one trillion, eleven billion, three hundred twenty-three million, two hundred twelve thousand, two hundred thirty-one".