1110232121 has 4 divisors (see below), whose sum is σ = 1110307044. Its totient is φ = 1110157200.

The previous prime is 1110232117. The next prime is 1110232139. The reversal of 1110232121 is 1212320111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1212320111 = 13901 ⋅87211.

It can be written as a sum of positive squares in 2 ways, for example, as 850538896 + 259693225 = 29164^2 + 16115^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110232121 - 2² = 1110232117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1110232096 and 1110232105.

It is not an unprimeable number, because it can be changed into a prime (1110235121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6950 + ... + 47631.

It is an arithmetic number, because the mean of its divisors is an integer number (277576761).

Almost surely, 2^1110232121 is an apocalyptic number.

It is an amenable number.

1110232121 is a deficient number, since it is larger than the sum of its proper divisors (74923).

1110232121 is an equidigital number, since it uses as much as digits as its factorization.

1110232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74922.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1110232121 is about 33320.1458730300. The cubic root of 1110232121 is about 1035.4709739334.

Adding to 1110232121 its reverse (1212320111), we get a palindrome (2322552232).

The spelling of 1110232121 in words is "one billion, one hundred ten million, two hundred thirty-two thousand, one hundred twenty-one".