21033321310 has 16 divisors (see below), whose sum is σ = 37959879600. Its totient is φ = 8391128256.

The previous prime is 21033321259. The next prime is 21033321311. The reversal of 21033321310 is 1312333012.

It is a super-2 number, since 2×21033321310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033321311) 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 in 7 ways as a sum of consecutive naturals, for example, 2771055 + ... + 2778634.

It is an arithmetic number, because the mean of its divisors is an integer number (2372492475).

Almost surely, 2^21033321310 is an apocalyptic number.

21033321310 is a deficient number, since it is larger than the sum of its proper divisors (16926558290).

21033321310 is a wasteful number, since it uses less digits than its factorization.

21033321310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550075.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21033321310 its reverse (1312333012), we get a palindrome (22345654322).

The spelling of 21033321310 in words is "twenty-one billion, thirty-three million, three hundred twenty-one thousand, three hundred ten".