21444301231012 has 24 divisors (see below), whose sum is σ = 40943922364800. Its totient is φ = 9746266356960.

The previous prime is 21444301231007. The next prime is 21444301231037. The reversal of 21444301231012 is 21013210344412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28202887 + ... + 28953262.

It is an arithmetic number, because the mean of its divisors is an integer number (1705996765200).

Almost surely, 2^{21444301231012} is an apocalyptic number.

21444301231012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21444301231012 is a deficient number, since it is larger than the sum of its proper divisors (19499621133788).

21444301231012 is a wasteful number, since it uses less digits than its factorization.

21444301231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57164691 (or 57164689 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21444301231012 its reverse (21013210344412), we get a palindrome (42457511575424).

The spelling of 21444301231012 in words is "twenty-one trillion, four hundred forty-four billion, three hundred one million, two hundred thirty-one thousand, twelve".