21223434233411 has 8 divisors (see below), whose sum is σ = 21317746278864. Its totient is φ = 21129129352800.

The previous prime is 21223434233371. The next prime is 21223434233423. The reversal of 21223434233411 is 11433243432212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21223434233411 - 2³⁴ = 21206254364227 is a prime.

It is a super-2 number, since 2×21223434233411² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223434233471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4190561 + ... + 7746461.

It is an arithmetic number, because the mean of its divisors is an integer number (2664718284858).

Almost surely, 2^{21223434233411} is an apocalyptic number.

21223434233411 is a deficient number, since it is larger than the sum of its proper divisors (94312045453).

21223434233411 is a wasteful number, since it uses less digits than its factorization.

21223434233411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582421.

The product of its digits is 82944, while the sum is 35.

Adding to 21223434233411 its reverse (11433243432212), we get a palindrome (32656677665623).

The spelling of 21223434233411 in words is "twenty-one trillion, two hundred twenty-three billion, four hundred thirty-four million, two hundred thirty-three thousand, four hundred eleven".