21222233333121 has 16 divisors (see below), whose sum is σ = 28315739744000. Its totient is φ = 14138443883520.

The previous prime is 21222233333087. The next prime is 21222233333137. The reversal of 21222233333121 is 12133333222212.

It is not a de Polignac number, because 21222233333121 - 2⁶ = 21222233333057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222233333621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32134881 + ... + 32788641.

It is an arithmetic number, because the mean of its divisors is an integer number (1769733734000).

Almost surely, 2^{21222233333121} is an apocalyptic number.

It is an amenable number.

21222233333121 is a deficient number, since it is larger than the sum of its proper divisors (7093506410879).

21222233333121 is a wasteful number, since it uses less digits than its factorization.

21222233333121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661176.

The product of its digits is 15552, while the sum is 30.

Adding to 21222233333121 its reverse (12133333222212), we get a palindrome (33355566555333).

The spelling of 21222233333121 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred thirty-three million, three hundred thirty-three thousand, one hundred twenty-one".