1132100021 has 4 divisors (see below), whose sum is σ = 1219184652. Its totient is φ = 1045015392.

The previous prime is 1132100017. The next prime is 1132100027. The reversal of 1132100021 is 1200012311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110019121 + 1022080900 = 10489^2 + 31970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1132100021 - 2² = 1132100017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1132099975 and 1132100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132100027) 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, 43542296 + ... + 43542321.

It is an arithmetic number, because the mean of its divisors is an integer number (304796163).

Almost surely, 2^1132100021 is an apocalyptic number.

It is an amenable number.

1132100021 is a deficient number, since it is larger than the sum of its proper divisors (87084631).

1132100021 is an equidigital number, since it uses as much as digits as its factorization.

1132100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87084630.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1132100021 is about 33646.6940575148. The cubic root of 1132100021 is about 1042.2252712845.

Adding to 1132100021 its reverse (1200012311), we get a palindrome (2332112332).

The spelling of 1132100021 in words is "one billion, one hundred thirty-two million, one hundred thousand, twenty-one".