1112323021 has 2 divisors, whose sum is σ = 1112323022. Its totient is φ = 1112323020.

The previous prime is 1112323019. The next prime is 1112323027. The reversal of 1112323021 is 1203232111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637562500 + 474760521 = 25250^2 + 21789^2 .

It is an emirp because it is prime and its reverse (1203232111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112323021 - 2¹ = 1112323019 is a prime.

Together with 1112323019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1112322986 and 1112323004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112323027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556161510 + 556161511.

It is an arithmetic number, because the mean of its divisors is an integer number (556161511).

Almost surely, 2^1112323021 is an apocalyptic number.

It is an amenable number.

1112323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112323021 is an equidigital number, since it uses as much as digits as its factorization.

1112323021 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 1112323021 is about 33351.5070274193. The cubic root of 1112323021 is about 1036.1206004041.

Adding to 1112323021 its reverse (1203232111), we get a palindrome (2315555132).

The spelling of 1112323021 in words is "one billion, one hundred twelve million, three hundred twenty-three thousand, twenty-one".