21003332113 has 8 divisors (see below), whose sum is σ = 21529370016. Its totient is φ = 20477949600.

The previous prime is 21003332111. The next prime is 21003332117. The reversal of 21003332113 is 31123330012.

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 21003332113 - 2¹ = 21003332111 is a prime.

It is a super-2 number, since 2×21003332113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21003332111) 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, 98631 + ... + 227452.

It is an arithmetic number, because the mean of its divisors is an integer number (2691171252).

Almost surely, 2^21003332113 is an apocalyptic number.

It is an amenable number.

21003332113 is a deficient number, since it is larger than the sum of its proper divisors (526037903).

21003332113 is a wasteful number, since it uses less digits than its factorization.

21003332113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327695.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21003332113 its reverse (31123330012), we get a palindrome (52126662125).

The spelling of 21003332113 in words is "twenty-one billion, three million, three hundred thirty-two thousand, one hundred thirteen".