21440322322 has 16 divisors (see below), whose sum is σ = 32676026400. Its totient is φ = 10549455840.

The previous prime is 21440322301. The next prime is 21440322349. The reversal of 21440322322 is 22322304412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247872 + ... + 322987.

It is an arithmetic number, because the mean of its divisors is an integer number (2042251650).

Almost surely, 2^21440322322 is an apocalyptic number.

21440322322 is a deficient number, since it is larger than the sum of its proper divisors (11235704078).

21440322322 is a wasteful number, since it uses less digits than its factorization.

21440322322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571161.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21440322322 its reverse (22322304412), we get a palindrome (43762626734).

The spelling of 21440322322 in words is "twenty-one billion, four hundred forty million, three hundred twenty-two thousand, three hundred twenty-two".