21233102213 has 2 divisors, whose sum is σ = 21233102214. Its totient is φ = 21233102212.

The previous prime is 21233102203. The next prime is 21233102237. The reversal of 21233102213 is 31220133212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20850782404 + 382319809 = 144398^2 + 19553^2 .

It is a cyclic number.

It is not a de Polignac number, because 21233102213 - 2⁴ = 21233102197 is a prime.

It is a super-3 number, since 3×21233102213³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233102203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616551106 + 10616551107.

It is an arithmetic number, because the mean of its divisors is an integer number (10616551107).

Almost surely, 2^21233102213 is an apocalyptic number.

It is an amenable number.

21233102213 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233102213 is an equidigital number, since it uses as much as digits as its factorization.

21233102213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21233102213 its reverse (31220133212), we get a palindrome (52453235425).

The spelling of 21233102213 in words is "twenty-one billion, two hundred thirty-three million, one hundred two thousand, two hundred thirteen".