21233213123203 has 32 divisors (see below), whose sum is σ = 23443458048000. Its totient is φ = 19142984640000.

The previous prime is 21233213123197. The next prime is 21233213123263. The reversal of 21233213123203 is 30232131233212.

It is a happy number.

It is not a de Polignac number, because 21233213123203 - 2⁹ = 21233213122691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21233213123263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208119798 + ... + 208221796.

It is an arithmetic number, because the mean of its divisors is an integer number (732608064000).

Almost surely, 2^{21233213123203} is an apocalyptic number.

21233213123203 is a deficient number, since it is larger than the sum of its proper divisors (2210244924797).

21233213123203 is a wasteful number, since it uses less digits than its factorization.

21233213123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106059.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21233213123203 its reverse (30232131233212), we get a palindrome (51465344356415).

The spelling of 21233213123203 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred three".