21244301412 has 24 divisors (see below), whose sum is σ = 49572600000. Its totient is φ = 7081067616.

The previous prime is 21244301399. The next prime is 21244301431. The reversal of 21244301412 is 21410344212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301089 + ... + 364887.

It is an arithmetic number, because the mean of its divisors is an integer number (2065525000).

Almost surely, 2^21244301412 is an apocalyptic number.

It is an amenable number.

21244301412 is an abundant number, since it is smaller than the sum of its proper divisors (28328298588).

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

21244301412 is a wasteful number, since it uses less digits than its factorization.

21244301412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91555 (or 91553 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21244301412 its reverse (21410344212), we get a palindrome (42654645624).

The spelling of 21244301412 in words is "twenty-one billion, two hundred forty-four million, three hundred one thousand, four hundred twelve".