21033330202 has 16 divisors (see below), whose sum is σ = 32464095840. Its totient is φ = 10214698032.

The previous prime is 21033330187. The next prime is 21033330233. The reversal of 21033330202 is 20203333012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21033330202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667773 + ... + 698560.

It is an arithmetic number, because the mean of its divisors is an integer number (2029005990).

Almost surely, 2^21033330202 is an apocalyptic number.

21033330202 is a deficient number, since it is larger than the sum of its proper divisors (11430765638).

21033330202 is a wasteful number, since it uses less digits than its factorization.

21033330202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366557.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21033330202 its reverse (20203333012), we get a palindrome (41236663214).

The spelling of 21033330202 in words is "twenty-one billion, thirty-three million, three hundred thirty thousand, two hundred two".