21201314445 has 96 divisors (see below), whose sum is σ = 39527579520. Its totient is φ = 10480803840.

The previous prime is 21201314437. The next prime is 21201314479. The reversal of 21201314445 is 54441310212.

21201314445 is a `hidden beast` number, since 2 + 1 + 201 + 3 + 14 + 445 = 666.

It is not a de Polignac number, because 21201314445 - 2³ = 21201314437 is a prime.

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 95 ways as a sum of consecutive naturals, for example, 8175069 + ... + 8177661.

It is an arithmetic number, because the mean of its divisors is an integer number (411745620).

Almost surely, 2^21201314445 is an apocalyptic number.

It is an amenable number.

21201314445 is a deficient number, since it is larger than the sum of its proper divisors (18326265075).

21201314445 is a wasteful number, since it uses less digits than its factorization.

21201314445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 21201314445 its reverse (54441310212), we get a palindrome (75642624657).

The spelling of 21201314445 in words is "twenty-one billion, two hundred one million, three hundred fourteen thousand, four hundred forty-five".