1120130021 has 4 divisors (see below), whose sum is σ = 1120492044. Its totient is φ = 1119768000.

The previous prime is 1120129993. The next prime is 1120130023. The reversal of 1120130021 is 1200310211.

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 555544900 + 564585121 = 23570^2 + 23761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120130021 - 2¹⁴ = 1120113637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120129984 and 1120130011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120130023) 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, 176330 + ... + 182571.

It is an arithmetic number, because the mean of its divisors is an integer number (280123011).

Almost surely, 2^1120130021 is an apocalyptic number.

It is an amenable number.

1120130021 is a deficient number, since it is larger than the sum of its proper divisors (362023).

1120130021 is an equidigital number, since it uses as much as digits as its factorization.

1120130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362022.

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

The square root of 1120130021 is about 33468.3435652259. The cubic root of 1120130021 is about 1038.5390053197.

Adding to 1120130021 its reverse (1200310211), we get a palindrome (2320440232).

The spelling of 1120130021 in words is "one billion, one hundred twenty million, one hundred thirty thousand, twenty-one".