21331012301012 has 48 divisors (see below), whose sum is σ = 40047646464000. Its totient is φ = 9911791501920.

The previous prime is 21331012301009. The next prime is 21331012301017. The reversal of 21331012301012 is 21010321013312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331012301017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8858648 + ... + 11006255.

It is an arithmetic number, because the mean of its divisors is an integer number (834325968000).

Almost surely, 2^{21331012301012} is an apocalyptic number.

It is an amenable number.

21331012301012 is a deficient number, since it is larger than the sum of its proper divisors (18716634162988).

21331012301012 is a wasteful number, since it uses less digits than its factorization.

21331012301012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865196 (or 19865194 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21331012301012 its reverse (21010321013312), we get a palindrome (42341333314324).

The spelling of 21331012301012 in words is "twenty-one trillion, three hundred thirty-one billion, twelve million, three hundred one thousand, twelve".