21422140041 has 4 divisors (see below), whose sum is σ = 28562853392. Its totient is φ = 14281426692.

The previous prime is 21422140031. The next prime is 21422140043. The reversal of 21422140041 is 14004122412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21422140041 - 2⁷ = 21422139913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21422140043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3570356671 + ... + 3570356676.

It is an arithmetic number, because the mean of its divisors is an integer number (7140713348).

Almost surely, 2^21422140041 is an apocalyptic number.

It is an amenable number.

21422140041 is a deficient number, since it is larger than the sum of its proper divisors (7140713351).

21422140041 is an equidigital number, since it uses as much as digits as its factorization.

21422140041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140713350.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21422140041 its reverse (14004122412), we get a palindrome (35426262453).

The spelling of 21422140041 in words is "twenty-one billion, four hundred twenty-two million, one hundred forty thousand, forty-one".