21331300021101 has 48 divisors (see below), whose sum is σ = 35248453094400. Its totient is φ = 12177244408320.

The previous prime is 21331300021093. The next prime is 21331300021123. The reversal of 21331300021101 is 10112000313312.

21331300021101 is a `hidden beast` number, since 2 + 1 + 331 + 300 + 0 + 21 + 10 + 1 = 666.

It is not a de Polignac number, because 21331300021101 - 2³ = 21331300021093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331300021001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544160100 + ... + 544199298.

It is an arithmetic number, because the mean of its divisors is an integer number (734342772800).

Almost surely, 2^{21331300021101} is an apocalyptic number.

21331300021101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21331300021101 is a deficient number, since it is larger than the sum of its proper divisors (13917153073299).

21331300021101 is a wasteful number, since it uses less digits than its factorization.

21331300021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47546 (or 47543 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21331300021101 its reverse (10112000313312), we get a palindrome (31443300334413).

The spelling of 21331300021101 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred million, twenty-one thousand, one hundred one".