21133313010 has 48 divisors (see below), whose sum is σ = 55038484800. Its totient is φ = 5626127520.

The previous prime is 21133313009. The next prime is 21133313017. The reversal of 21133313010 is 1031333112.

It is a happy number.

21133313010 is a `hidden beast` number, since 21 + 13 + 331 + 301 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21133313017) 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 23 ways as a sum of consecutive naturals, for example, 142096 + ... + 249915.

It is an arithmetic number, because the mean of its divisors is an integer number (1146635100).

Almost surely, 2^21133313010 is an apocalyptic number.

21133313010 is an abundant number, since it is smaller than the sum of its proper divisors (33905171790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21133313010 is a wasteful number, since it uses less digits than its factorization.

21133313010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392623 (or 392620 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21133313010 its reverse (1031333112), we get a palindrome (22164646122).

The spelling of 21133313010 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirteen thousand, ten".