1021130113 has 8 divisors (see below), whose sum is σ = 1024353288. Its totient is φ = 1017913344.

The previous prime is 1021130081. The next prime is 1021130119. The reversal of 1021130113 is 3110311201.

It can be written as a sum of positive squares in 4 ways, for example, as 112529664 + 908600449 = 10608^2 + 30143^2 .

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 1021130113 - 2⁵ = 1021130081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021130093 and 1021130102.

It is not an unprimeable number, because it can be changed into a prime (1021130119) 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, 656745 + ... + 658297.

It is an arithmetic number, because the mean of its divisors is an integer number (128044161).

Almost surely, 2^1021130113 is an apocalyptic number.

It is an amenable number.

1021130113 is a deficient number, since it is larger than the sum of its proper divisors (3223175).

1021130113 is an equidigital number, since it uses as much as digits as its factorization.

1021130113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1021130113 is about 31955.1265527145. The cubic root of 1021130113 is about 1006.9943362050.

Adding to 1021130113 its reverse (3110311201), we get a palindrome (4131441314).

The spelling of 1021130113 in words is "one billion, twenty-one million, one hundred thirty thousand, one hundred thirteen".