21201444001112 has 16 divisors (see below), whose sum is σ = 40502758587840. Its totient is φ = 10400708377696.

The previous prime is 21201444001099. The next prime is 21201444001123. The reversal of 21201444001112 is 21110044410212.

It is a super-2 number, since 2×21201444001112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25001702408 + ... + 25001703255.

It is an arithmetic number, because the mean of its divisors is an integer number (2531422411740).

Almost surely, 2^{21201444001112} is an apocalyptic number.

It is an amenable number.

21201444001112 is a deficient number, since it is larger than the sum of its proper divisors (19301314586728).

21201444001112 is a wasteful number, since it uses less digits than its factorization.

21201444001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50003405722 (or 50003405718 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 21201444001112 its reverse (21110044410212), we get a palindrome (42311488411324).

The spelling of 21201444001112 in words is "twenty-one trillion, two hundred one billion, four hundred forty-four million, one thousand, one hundred twelve".