21133321102 has 16 divisors (see below), whose sum is σ = 33414854400. Its totient is φ = 9996584760.

The previous prime is 21133321051. The next prime is 21133321123. The reversal of 21133321102 is 20112333112.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 21133321102.

It is a congruent number.

It is an unprimeable number.

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, 359424 + ... + 414067.

It is an arithmetic number, because the mean of its divisors is an integer number (2088428400).

Almost surely, 2^21133321102 is an apocalyptic number.

21133321102 is a deficient number, since it is larger than the sum of its proper divisors (12281533298).

21133321102 is a wasteful number, since it uses less digits than its factorization.

21133321102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774231.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21133321102 its reverse (20112333112), we get a palindrome (41245654214).

The spelling of 21133321102 in words is "twenty-one billion, one hundred thirty-three million, three hundred twenty-one thousand, one hundred two".