1111122243231 has 128 divisors (see below), whose sum is σ = 2054457022464. Its totient is φ = 515586539520.

The previous prime is 1111122243211. The next prime is 1111122243233. The reversal of 1111122243231 is 1323422211111.

It is not a de Polignac number, because 1111122243231 - 2⁵ = 1111122243199 is a prime.

It is a super-2 number, since 2×1111122243231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111122243233) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11570791 + ... + 11666423.

It is an arithmetic number, because the mean of its divisors is an integer number (16050445488).

Almost surely, 2^{1111122243231} is an apocalyptic number.

1111122243231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111122243231 is a deficient number, since it is larger than the sum of its proper divisors (943334779233).

1111122243231 is a wasteful number, since it uses less digits than its factorization.

1111122243231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95793.

The product of its digits is 576, while the sum is 24.

Adding to 1111122243231 its reverse (1323422211111), we get a palindrome (2434544454342).

The spelling of 1111122243231 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, two hundred forty-three thousand, two hundred thirty-one".