1111121323 has 8 divisors (see below), whose sum is σ = 1208929568. Its totient is φ = 1015075584.

The previous prime is 1111121267. The next prime is 1111121327. The reversal of 1111121323 is 3231211111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111121323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111121297 and 1111121306.

It is not an unprimeable number, because it can be changed into a prime (1111121327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439311 + ... + 441832.

It is an arithmetic number, because the mean of its divisors is an integer number (151116196).

Almost surely, 2^1111121323 is an apocalyptic number.

1111121323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1111121323 is a deficient number, since it is larger than the sum of its proper divisors (97808245).

1111121323 is an equidigital number, since it uses as much as digits as its factorization.

1111121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881253.

The product of its digits is 36, while the sum is 16.

The square root of 1111121323 is about 33333.4865113147. The cubic root of 1111121323 is about 1035.7473417129.

Adding to 1111121323 its reverse (3231211111), we get a palindrome (4342332434).

The spelling of 1111121323 in words is "one billion, one hundred eleven million, one hundred twenty-one thousand, three hundred twenty-three".