1130001021 has 12 divisors (see below), whose sum is σ = 1632654972. Its totient is φ = 753134976.

The previous prime is 1130001011. The next prime is 1130001031. The reversal of 1130001021 is 1201000311.

It is an interprime number because it is at equal distance from previous prime (1130001011) and next prime (1130001031).

It can be written as a sum of positive squares in 2 ways, for example, as 1116495396 + 13505625 = 33414^2 + 3675^2 .

It is not a de Polignac number, because 1130001021 - 2⁶ = 1130000957 is a prime.

It is a super-2 number, since 2×1130001021² = 2553804614922084882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1130000994 and 1130001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24805 + ... + 53621.

It is an arithmetic number, because the mean of its divisors is an integer number (136054581).

Almost surely, 2^1130001021 is an apocalyptic number.

It is an amenable number.

1130001021 is a deficient number, since it is larger than the sum of its proper divisors (502653951).

1130001021 is a wasteful number, since it uses less digits than its factorization.

1130001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33180 (or 33177 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1130001021 is about 33615.4878143989. The cubic root of 1130001021 is about 1041.5807510096.

Adding to 1130001021 its reverse (1201000311), we get a palindrome (2331001332).

The spelling of 1130001021 in words is "one billion, one hundred thirty million, one thousand, twenty-one".