1110343021 has 2 divisors, whose sum is σ = 1110343022. Its totient is φ = 1110343020.

The previous prime is 1110343019. The next prime is 1110343037. The reversal of 1110343021 is 1203430111.

It is an a-pointer prime, because the next prime (1110343037) can be obtained adding 1110343021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050667396 + 59675625 = 32414^2 + 7725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110343021 - 2¹ = 1110343019 is a prime.

Together with 1110343019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1110342986 and 1110343004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110343001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555171510 + 555171511.

It is an arithmetic number, because the mean of its divisors is an integer number (555171511).

Almost surely, 2^1110343021 is an apocalyptic number.

It is an amenable number.

1110343021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110343021 is an equidigital number, since it uses as much as digits as its factorization.

1110343021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1110343021 is about 33321.8099898550. The cubic root of 1110343021 is about 1035.5054501796.

Adding to 1110343021 its reverse (1203430111), we get a palindrome (2313773132).

The spelling of 1110343021 in words is "one billion, one hundred ten million, three hundred forty-three thousand, twenty-one".