1121513021 has 8 divisors (see below), whose sum is σ = 1134302400. Its totient is φ = 1108791360.

The previous prime is 1121512991. The next prime is 1121513033. The reversal of 1121513021 is 1203151211.

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 1121513021 - 2³⁰ = 47771197 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 (1121513521) 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 7 ways as a sum of consecutive naturals, for example, 16760 + ... + 50238.

It is an arithmetic number, because the mean of its divisors is an integer number (141787800).

Almost surely, 2^1121513021 is an apocalyptic number.

It is an amenable number.

1121513021 is a deficient number, since it is larger than the sum of its proper divisors (12789379).

1121513021 is a wasteful number, since it uses less digits than its factorization.

1121513021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33859.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1121513021 is about 33488.9985069724. The cubic root of 1121513021 is about 1038.9662499848.

Adding to 1121513021 its reverse (1203151211), we get a palindrome (2324664232).

The spelling of 1121513021 in words is "one billion, one hundred twenty-one million, five hundred thirteen thousand, twenty-one".