21322233291 has 16 divisors (see below), whose sum is σ = 28778722560. Its totient is φ = 14040361440.

The previous prime is 21322233253. The next prime is 21322233367. The reversal of 21322233291 is 19233222312.

It is a happy number.

It is not a de Polignac number, because 21322233291 - 2¹⁸ = 21321971147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21322213291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1656661 + ... + 1669481.

It is an arithmetic number, because the mean of its divisors is an integer number (1798670160).

Almost surely, 2^21322233291 is an apocalyptic number.

21322233291 is a deficient number, since it is larger than the sum of its proper divisors (7456489269).

21322233291 is a wasteful number, since it uses less digits than its factorization.

21322233291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19586.

The product of its digits is 7776, while the sum is 30.

The spelling of 21322233291 in words is "twenty-one billion, three hundred twenty-two million, two hundred thirty-three thousand, two hundred ninety-one".