21322224403442 has 16 divisors (see below), whose sum is σ = 32240852021664. Its totient is φ = 10575341244000.

The previous prime is 21322224403409. The next prime is 21322224403451. The reversal of 21322224403442 is 24430442222312.

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, 16245659 + ... + 17509022.

It is an arithmetic number, because the mean of its divisors is an integer number (2015053251354).

Almost surely, 2^{21322224403442} is an apocalyptic number.

21322224403442 is a deficient number, since it is larger than the sum of its proper divisors (10918627618222).

21322224403442 is a wasteful number, since it uses less digits than its factorization.

21322224403442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33757225.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 21322224403442 its reverse (24430442222312), we get a palindrome (45752666625754).

The spelling of 21322224403442 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred twenty-four million, four hundred three thousand, four hundred forty-two".