21422316071 has 16 divisors (see below), whose sum is σ = 23614387104. Its totient is φ = 19308288384.

The previous prime is 21422316067. The next prime is 21422316101. The reversal of 21422316071 is 17061322412.

It is a cyclic number.

It is not a de Polignac number, because 21422316071 - 2² = 21422316067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422316271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3058145 + ... + 3065141.

It is an arithmetic number, because the mean of its divisors is an integer number (1475899194).

Almost surely, 2^21422316071 is an apocalyptic number.

21422316071 is a deficient number, since it is larger than the sum of its proper divisors (2192071033).

21422316071 is a wasteful number, since it uses less digits than its factorization.

21422316071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12530.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 21422316071 its reverse (17061322412), we get a palindrome (38483638483).

The spelling of 21422316071 in words is "twenty-one billion, four hundred twenty-two million, three hundred sixteen thousand, seventy-one".