21002033230 has 16 divisors (see below), whose sum is σ = 39793326480. Its totient is φ = 7958665152.

The previous prime is 21002033219. The next prime is 21002033231. The reversal of 21002033230 is 3233020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002033231) 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 7 ways as a sum of consecutive naturals, for example, 55268319 + ... + 55268698.

It is an arithmetic number, because the mean of its divisors is an integer number (2487082905).

Almost surely, 2^21002033230 is an apocalyptic number.

21002033230 is a deficient number, since it is larger than the sum of its proper divisors (18791293250).

21002033230 is a wasteful number, since it uses less digits than its factorization.

21002033230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110537043.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21002033230 its reverse (3233020012), we get a palindrome (24235053242).

The spelling of 21002033230 in words is "twenty-one billion, two million, thirty-three thousand, two hundred thirty".