21422303291 has 4 divisors (see below), whose sum is σ = 21422776032. Its totient is φ = 21421830552.

The previous prime is 21422303267. The next prime is 21422303303. The reversal of 21422303291 is 19230322412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21422303291 - 2³⁴ = 4242434107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21422308291) 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, 160220 + ... + 261753.

It is an arithmetic number, because the mean of its divisors is an integer number (5355694008).

Almost surely, 2^21422303291 is an apocalyptic number.

21422303291 is a deficient number, since it is larger than the sum of its proper divisors (472741).

21422303291 is an equidigital number, since it uses as much as digits as its factorization.

21422303291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472740.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 21422303291 in words is "twenty-one billion, four hundred twenty-two million, three hundred three thousand, two hundred ninety-one".