21331003303197 has 12 divisors (see below), whose sum is σ = 35213084818080. Its totient is φ = 12189144744648.

The previous prime is 21331003303187. The next prime is 21331003303243. The reversal of 21331003303197 is 79130330013312.

21331003303197 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 1 + 0 + 0 + 330 + 319 + 7 = 666.

It is not a de Polignac number, because 21331003303197 - 2²³ = 21330994914589 is a prime.

It is a super-4 number, since 4×21331003303197⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331003303117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169293676947 + ... + 169293677072.

It is an arithmetic number, because the mean of its divisors is an integer number (2934423734840).

Almost surely, 2^{21331003303197} is an apocalyptic number.

It is an amenable number.

21331003303197 is a deficient number, since it is larger than the sum of its proper divisors (13882081514883).

21331003303197 is a wasteful number, since it uses less digits than its factorization.

21331003303197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338587354032 (or 338587354029 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 36.

The spelling of 21331003303197 in words is "twenty-one trillion, three hundred thirty-one billion, three million, three hundred three thousand, one hundred ninety-seven".