1132321021 has 16 divisors (see below), whose sum is σ = 1249617600. Its totient is φ = 1019410560.

The previous prime is 1132321009. The next prime is 1132321111. The reversal of 1132321021 is 1201232311.

It is a cyclic number.

It is not a de Polignac number, because 1132321021 - 2¹⁹ = 1131796733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1132320986 and 1132321004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132321121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585426 + ... + 587356.

It is an arithmetic number, because the mean of its divisors is an integer number (78101100).

Almost surely, 2^1132321021 is an apocalyptic number.

It is an amenable number.

1132321021 is a deficient number, since it is larger than the sum of its proper divisors (117296579).

1132321021 is a wasteful number, since it uses less digits than its factorization.

1132321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036.

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

The square root of 1132321021 is about 33649.9780237670. The cubic root of 1132321021 is about 1042.2930853158.

Adding to 1132321021 its reverse (1201232311), we get a palindrome (2333553332).

The spelling of 1132321021 in words is "one billion, one hundred thirty-two million, three hundred twenty-one thousand, twenty-one".