21233033211 has 64 divisors (see below), whose sum is σ = 32994662400. Its totient is φ = 12059574912.

The previous prime is 21233033147. The next prime is 21233033287. The reversal of 21233033211 is 11233033212.

It is not a de Polignac number, because 21233033211 - 2⁶ = 21233033147 is a prime.

It is a super-3 number, since 3×21233033211³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21233033911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13760106 + ... + 13761648.

It is an arithmetic number, because the mean of its divisors is an integer number (515541600).

Almost surely, 2^21233033211 is an apocalyptic number.

21233033211 is a deficient number, since it is larger than the sum of its proper divisors (11761629189).

21233033211 is a wasteful number, since it uses less digits than its factorization.

21233033211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21233033211 its reverse (11233033212), we get a palindrome (32466066423).

Subtracting from 21233033211 its reverse (11233033212), we obtain a palindrome (9999999999).

The spelling of 21233033211 in words is "twenty-one billion, two hundred thirty-three million, thirty-three thousand, two hundred eleven".