1137130021 has 8 divisors (see below), whose sum is σ = 1141766360. Its totient is φ = 1132503552.

The previous prime is 1137130019. The next prime is 1137130063. The reversal of 1137130021 is 1200317311.

It can be written as a sum of positive squares in 4 ways, for example, as 565250625 + 571879396 = 23775^2 + 23914^2 .

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 1137130021 - 2¹ = 1137130019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137130081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297901 + ... + 301693.

It is an arithmetic number, because the mean of its divisors is an integer number (142720795).

Almost surely, 2^1137130021 is an apocalyptic number.

It is an amenable number.

1137130021 is a deficient number, since it is larger than the sum of its proper divisors (4636339).

1137130021 is an equidigital number, since it uses as much as digits as its factorization.

1137130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 1137130021 is about 33721.3585283867. The cubic root of 1137130021 is about 1043.7665509178.

Adding to 1137130021 its reverse (1200317311), we get a palindrome (2337447332).

The spelling of 1137130021 in words is "one billion, one hundred thirty-seven million, one hundred thirty thousand, twenty-one".