21422141344 has 12 divisors (see below), whose sum is σ = 42174840834. Its totient is φ = 10711070656.

The previous prime is 21422141339. The next prime is 21422141353. The reversal of 21422141344 is 44314122412.

It can be written as a sum of positive squares in only one way, i.e., 17905651344 + 3516490000 = 133812^2 + 59300^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334720927 + ... + 334720990.

Almost surely, 2^21422141344 is an apocalyptic number.

It is an amenable number.

21422141344 is a deficient number, since it is larger than the sum of its proper divisors (20752699490).

21422141344 is an equidigital number, since it uses as much as digits as its factorization.

21422141344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669441927 (or 669441919 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

Adding to 21422141344 its reverse (44314122412), we get a palindrome (65736263756).

The spelling of 21422141344 in words is "twenty-one billion, four hundred twenty-two million, one hundred forty-one thousand, three hundred forty-four".