21444413403322 has 48 divisors (see below), whose sum is σ = 39853665289152. Its totient is φ = 8473604330880.

The previous prime is 21444413403313. The next prime is 21444413403331. The reversal of 21444413403322 is 22330431444412.

It is an interprime number because it is at equal distance from previous prime (21444413403313) and next prime (21444413403331).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3260304 + ... + 7315627.

It is an arithmetic number, because the mean of its divisors is an integer number (830284693524).

Almost surely, 2^{21444413403322} is an apocalyptic number.

21444413403322 is a deficient number, since it is larger than the sum of its proper divisors (18409251885830).

21444413403322 is a wasteful number, since it uses less digits than its factorization.

21444413403322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10576823 (or 10576810 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 21444413403322 its reverse (22330431444412), we get a palindrome (43774844847734).

The spelling of 21444413403322 in words is "twenty-one trillion, four hundred forty-four billion, four hundred thirteen million, four hundred three thousand, three hundred twenty-two".