1132123021 has 8 divisors (see below), whose sum is σ = 1135469880. Its totient is φ = 1128782592.

The previous prime is 1132123019. The next prime is 1132123033. The reversal of 1132123021 is 1203212311.

It can be written as a sum of positive squares in 4 ways, for example, as 328116996 + 804006025 = 18114^2 + 28355^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1132123021 - 2¹ = 1132123019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1132122986 and 1132123004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132123051) 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 in 7 ways as a sum of consecutive naturals, for example, 789321 + ... + 790753.

It is an arithmetic number, because the mean of its divisors is an integer number (141933735).

Almost surely, 2^1132123021 is an apocalyptic number.

It is an amenable number.

1132123021 is a deficient number, since it is larger than the sum of its proper divisors (3346859).

1132123021 is an equidigital number, since it uses as much as digits as its factorization.

1132123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215.

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

The square root of 1132123021 is about 33647.0358427009. The cubic root of 1132123021 is about 1042.2323292648.

Adding to 1132123021 its reverse (1203212311), we get a palindrome (2335335332).

The spelling of 1132123021 in words is "one billion, one hundred thirty-two million, one hundred twenty-three thousand, twenty-one".