21020332003111 has 8 divisors (see below), whose sum is σ = 24033292364960. Its totient is φ = 18009885588768.

The previous prime is 21020332003057. The next prime is 21020332003171. The reversal of 21020332003111 is 11130023302012.

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 21020332003111 - 2³⁹ = 20470576189223 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 (21020332003171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628468956 + ... + 628502401.

It is an arithmetic number, because the mean of its divisors is an integer number (3004161545620).

Almost surely, 2^{21020332003111} is an apocalyptic number.

21020332003111 is a deficient number, since it is larger than the sum of its proper divisors (3012960361849).

21020332003111 is a wasteful number, since it uses less digits than its factorization.

21020332003111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256973753.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21020332003111 its reverse (11130023302012), we get a palindrome (32150355305123).

The spelling of 21020332003111 in words is "twenty-one trillion, twenty billion, three hundred thirty-two million, three thousand, one hundred eleven".