11130001021 has 4 divisors (see below), whose sum is σ = 11489033344. Its totient is φ = 10770968700.

The previous prime is 11130000979. The next prime is 11130001039. The reversal of 11130001021 is 12010003111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12010003111 = 1109 ⋅10829579.

It is a cyclic number.

It is not a de Polignac number, because 11130001021 - 2¹⁹ = 11129476733 is a prime.

It is a super-2 number, since 2×11130001021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11130000989 and 11130001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130001061) 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, 179516115 + ... + 179516176.

It is an arithmetic number, because the mean of its divisors is an integer number (2872258336).

Almost surely, 2^11130001021 is an apocalyptic number.

It is an amenable number.

11130001021 is a deficient number, since it is larger than the sum of its proper divisors (359032323).

11130001021 is an equidigital number, since it uses as much as digits as its factorization.

11130001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359032322.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11130001021 its reverse (12010003111), we get a palindrome (23140004132).

The spelling of 11130001021 in words is "eleven billion, one hundred thirty million, one thousand, twenty-one".