21204341322 has 32 divisors (see below), whose sum is σ = 43649553024. Its totient is φ = 6862132800.

The previous prime is 21204341311. The next prime is 21204341387. The reversal of 21204341322 is 22314340212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21204341292 and 21204341301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254 + ... + 205937.

It is an arithmetic number, because the mean of its divisors is an integer number (1364048532).

Almost surely, 2^21204341322 is an apocalyptic number.

21204341322 is an abundant number, since it is smaller than the sum of its proper divisors (22445211702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21204341322 is a wasteful number, since it uses less digits than its factorization.

21204341322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207694.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21204341322 its reverse (22314340212), we get a palindrome (43518681534).

It can be divided in two parts, 21204 and 341322, that added together give a triangular number (362526 = T₈₅₁).

The spelling of 21204341322 in words is "twenty-one billion, two hundred four million, three hundred forty-one thousand, three hundred twenty-two".