21441211312 has 10 divisors (see below), whose sum is σ = 41542346948. Its totient is φ = 10720605648.

The previous prime is 21441211243. The next prime is 21441211313. The reversal of 21441211312 is 21311214412.

It is a super-2 number, since 2×21441211312² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21441211313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670037838 + ... + 670037869.

Almost surely, 2^21441211312 is an apocalyptic number.

It is an amenable number.

21441211312 is a deficient number, since it is larger than the sum of its proper divisors (20101135636).

21441211312 is a wasteful number, since it uses less digits than its factorization.

21441211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340075715 (or 1340075709 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

Adding to 21441211312 its reverse (21311214412), we get a palindrome (42752425724).

The spelling of 21441211312 in words is "twenty-one billion, four hundred forty-one million, two hundred eleven thousand, three hundred twelve".