1116231421 has 4 divisors (see below), whose sum is σ = 1118642752. Its totient is φ = 1113820092.

The previous prime is 1116231419. The next prime is 1116231427. The reversal of 1116231421 is 1241326111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1241326111 = 17 ⋅73019183.

It is a cyclic number.

It is not a de Polignac number, because 1116231421 - 2¹ = 1116231419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1116231392 and 1116231401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116231427) 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, 1204971 + ... + 1205896.

It is an arithmetic number, because the mean of its divisors is an integer number (279660688).

Almost surely, 2^1116231421 is an apocalyptic number.

It is an amenable number.

1116231421 is a deficient number, since it is larger than the sum of its proper divisors (2411331).

1116231421 is an equidigital number, since it uses as much as digits as its factorization.

1116231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411330.

The product of its digits is 288, while the sum is 22.

The square root of 1116231421 is about 33410.0497006514. The cubic root of 1116231421 is about 1037.3327302988.

Adding to 1116231421 its reverse (1241326111), we get a palindrome (2357557532).

The spelling of 1116231421 in words is "one billion, one hundred sixteen million, two hundred thirty-one thousand, four hundred twenty-one".