21422034441 has 20 divisors (see below), whose sum is σ = 33883220052. Its totient is φ = 13441275648.

The previous prime is 21422034409. The next prime is 21422034461. The reversal of 21422034441 is 14443022412.

21422034441 is a `hidden beast` number, since 2 + 14 + 2 + 203 + 4 + 441 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12593552841 + 8828481600 = 112221^2 + 93960^2 .

It is not a de Polignac number, because 21422034441 - 2⁵ = 21422034409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21422034461) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7777140 + ... + 7779893.

Almost surely, 2^21422034441 is an apocalyptic number.

It is an amenable number.

21422034441 is a deficient number, since it is larger than the sum of its proper divisors (12461185611).

21422034441 is a wasteful number, since it uses less digits than its factorization.

21422034441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15557062 (or 15557053 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21422034441 its reverse (14443022412), we get a palindrome (35865056853).

The spelling of 21422034441 in words is "twenty-one billion, four hundred twenty-two million, thirty-four thousand, four hundred forty-one".