21300441212 has 12 divisors (see below), whose sum is σ = 37278795456. Its totient is φ = 10649356800.

The previous prime is 21300441191. The next prime is 21300441229. The reversal of 21300441212 is 21214400312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158789 + ... + 260412.

It is an arithmetic number, because the mean of its divisors is an integer number (3106566288).

Almost surely, 2^21300441212 is an apocalyptic number.

It is an amenable number.

21300441212 is a deficient number, since it is larger than the sum of its proper divisors (15978354244).

21300441212 is a wasteful number, since it uses less digits than its factorization.

21300441212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431908 (or 431906 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21300441212 its reverse (21214400312), we get a palindrome (42514841524).

The spelling of 21300441212 in words is "twenty-one billion, three hundred million, four hundred forty-one thousand, two hundred twelve".