21422201444 has 24 divisors (see below), whose sum is σ = 42848160768. Its totient is φ = 9180138240.

The previous prime is 21422201401. The next prime is 21422201459. The reversal of 21422201444 is 44410222412.

It is a happy number.

It is a super-3 number, since 3×21422201444³ (a number of 32 digits) contains 333 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, 381437 + ... + 433979.

It is an arithmetic number, because the mean of its divisors is an integer number (1785340032).

Almost surely, 2^21422201444 is an apocalyptic number.

It is an amenable number.

21422201444 is an abundant number, since it is smaller than the sum of its proper divisors (21425959324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21422201444 is a wasteful number, since it uses less digits than its factorization.

21422201444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67115 (or 67113 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 21422201444 its reverse (44410222412), we get a palindrome (65832423856).

The spelling of 21422201444 in words is "twenty-one billion, four hundred twenty-two million, two hundred one thousand, four hundred forty-four".