21444302122 has 16 divisors (see below), whose sum is σ = 32781159432. Its totient is φ = 10517345280.

The previous prime is 21444302107. The next prime is 21444302219. The reversal of 21444302122 is 22120344412.

It can be written as a sum of positive squares in 4 ways, for example, as 15006005001 + 6438297121 = 122499^2 + 80239^2 .

It is a super-2 number, since 2×21444302122² (a number of 21 digits) contains 22 as substring.

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, 471922 + ... + 515362.

Almost surely, 2^21444302122 is an apocalyptic number.

21444302122 is a deficient number, since it is larger than the sum of its proper divisors (11336857310).

21444302122 is a wasteful number, since it uses less digits than its factorization.

21444302122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48153.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21444302122 its reverse (22120344412), we get a palindrome (43564646534).

It can be divided in two parts, 214 and 44302122, that added together give a square (44302336 = 6656²).

The spelling of 21444302122 in words is "twenty-one billion, four hundred forty-four million, three hundred two thousand, one hundred twenty-two".