21321121333222 has 16 divisors (see below), whose sum is σ = 32589772103232. Its totient is φ = 10457921522880.

The previous prime is 21321121333219. The next prime is 21321121333241. The reversal of 21321121333222 is 22233312112312.

It is a congruent number.

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, 13644783 + ... + 15126874.

It is an arithmetic number, because the mean of its divisors is an integer number (2036860756452).

Almost surely, 2^{21321121333222} is an apocalyptic number.

21321121333222 is a deficient number, since it is larger than the sum of its proper divisors (11268650770010).

21321121333222 is a wasteful number, since it uses less digits than its factorization.

21321121333222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28778703.

The product of its digits is 5184, while the sum is 28.

Adding to 21321121333222 its reverse (22233312112312), we get a palindrome (43554433445534).

The spelling of 21321121333222 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred twenty-two".