21233212113233 has 8 divisors (see below), whose sum is σ = 22482374158152. Its totient is φ = 19984066686976.

The previous prime is 21233212113227. The next prime is 21233212113251. The reversal of 21233212113233 is 33231121233212.

It can be written as a sum of positive squares in 4 ways, for example, as 14195163916609 + 7038048196624 = 3767647^2 + 2652932^2 .

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

It is not a de Polignac number, because 21233212113233 - 2³⁴ = 21216032244049 is a prime.

It is a super-2 number, since 2×21233212113233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21233212113196 and 21233212113205.

It is not an unprimeable number, because it can be changed into a prime (21233212713233) 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, 1474760 + ... + 6681417.

It is an arithmetic number, because the mean of its divisors is an integer number (2810296769769).

Almost surely, 2^{21233212113233} is an apocalyptic number.

It is an amenable number.

21233212113233 is a deficient number, since it is larger than the sum of its proper divisors (1249162044919).

21233212113233 is a wasteful number, since it uses less digits than its factorization.

21233212113233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8309331.

The product of its digits is 7776, while the sum is 29.

Adding to 21233212113233 its reverse (33231121233212), we get a palindrome (54464333346445).

The spelling of 21233212113233 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred twelve million, one hundred thirteen thousand, two hundred thirty-three".