21231333022210 has 8 divisors (see below), whose sum is σ = 38216399439996. Its totient is φ = 8492533208880.

The previous prime is 21231333022153. The next prime is 21231333022213. The reversal of 21231333022210 is 1222033313212.

It can be written as a sum of positive squares in 2 ways, for example, as 19645806304881 + 1585526717329 = 4432359^2 + 1259177^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21231333022213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061566651101 + ... + 1061566651120.

Almost surely, 2^{21231333022210} is an apocalyptic number.

21231333022210 is a deficient number, since it is larger than the sum of its proper divisors (16985066417786).

21231333022210 is a wasteful number, since it uses less digits than its factorization.

21231333022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123133302228.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21231333022210 its reverse (1222033313212), we get a palindrome (22453366335422).

The spelling of 21231333022210 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred thirty-three million, twenty-two thousand, two hundred ten".