21032233213 has 8 divisors (see below), whose sum is σ = 22271406840. Its totient is φ = 19793280000.

The previous prime is 21032233169. The next prime is 21032233231. The reversal of 21032233213 is 31233223012.

It can be written as a sum of positive squares in 4 ways, for example, as 3471212889 + 17561020324 = 58917^2 + 132518^2 .

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 21032233213 - 2⁹ = 21032232701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032233273) 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, 166963 + ... + 264463.

It is an arithmetic number, because the mean of its divisors is an integer number (2783925855).

Almost surely, 2^21032233213 is an apocalyptic number.

It is an amenable number.

21032233213 is a deficient number, since it is larger than the sum of its proper divisors (1239173627).

21032233213 is a wasteful number, since it uses less digits than its factorization.

21032233213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110207.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21032233213 its reverse (31233223012), we get a palindrome (52265456225).

The spelling of 21032233213 in words is "twenty-one billion, thirty-two million, two hundred thirty-three thousand, two hundred thirteen".