1120013521 has 4 divisors (see below), whose sum is σ = 1221832944. Its totient is φ = 1018194100.

The previous prime is 1120013513. The next prime is 1120013549. The reversal of 1120013521 is 1253100211.

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: 1253100211 = 11 ⋅113918201.

It is not a de Polignac number, because 1120013521 - 2³ = 1120013513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120013495 and 1120013504.

It is not an unprimeable number, because it can be changed into a prime (1120013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50909695 + ... + 50909716.

It is an arithmetic number, because the mean of its divisors is an integer number (305458236).

Almost surely, 2^1120013521 is an apocalyptic number.

1120013521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1120013521 is a deficient number, since it is larger than the sum of its proper divisors (101819423).

1120013521 is a wasteful number, since it uses less digits than its factorization.

1120013521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101819422.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1120013521 is about 33466.6030693287. The cubic root of 1120013521 is about 1038.5029993839.

Adding to 1120013521 its reverse (1253100211), we get a palindrome (2373113732).

The spelling of 1120013521 in words is "one billion, one hundred twenty million, thirteen thousand, five hundred twenty-one".