21331714211612 has 24 divisors (see below), whose sum is σ = 43468398773856. Its totient is φ = 8969669587008.

The previous prime is 21331714211611. The next prime is 21331714211641. The reversal of 21331714211612 is 21611241713312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331714211611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7187233763 + ... + 7187236730.

It is an arithmetic number, because the mean of its divisors is an integer number (1811183282244).

Almost surely, 2^{21331714211612} is an apocalyptic number.

It is an amenable number.

21331714211612 is an abundant number, since it is smaller than the sum of its proper divisors (22136684562244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21331714211612 is a wasteful number, since it uses less digits than its factorization.

21331714211612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14374470557 (or 14374470555 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

Adding to 21331714211612 its reverse (21611241713312), we get a palindrome (42942955924924).

The spelling of 21331714211612 in words is "twenty-one trillion, three hundred thirty-one billion, seven hundred fourteen million, two hundred eleven thousand, six hundred twelve".