21223212311233 has 16 divisors (see below), whose sum is σ = 21435161932800. Its totient is φ = 21012344640000.

The previous prime is 21223212311227. The next prime is 21223212311243. The reversal of 21223212311233 is 33211321232212.

It is a cyclic number.

It is not a de Polignac number, because 21223212311233 - 2⁴¹ = 19024189055681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223212311243) 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, 317912608 + ... + 317979358.

It is an arithmetic number, because the mean of its divisors is an integer number (1339697620800).

Almost surely, 2^{21223212311233} is an apocalyptic number.

It is an amenable number.

21223212311233 is a deficient number, since it is larger than the sum of its proper divisors (211949621567).

21223212311233 is a wasteful number, since it uses less digits than its factorization.

21223212311233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74808.

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

Adding to 21223212311233 its reverse (33211321232212), we get a palindrome (54434533543445).

The spelling of 21223212311233 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twelve million, three hundred eleven thousand, two hundred thirty-three".