21011010230 has 32 divisors (see below), whose sum is σ = 43293248064. Its totient is φ = 7192008576.

The previous prime is 21011010211. The next prime is 21011010239. The reversal of 21011010230 is 3201011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011010239) 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 15 ways as a sum of consecutive naturals, for example, 201917 + ... + 287736.

It is an arithmetic number, because the mean of its divisors is an integer number (1352914002).

Almost surely, 2^21011010230 is an apocalyptic number.

21011010230 is an abundant number, since it is smaller than the sum of its proper divisors (22282237834).

21011010230 is a wasteful number, since it uses less digits than its factorization.

21011010230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490280.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21011010230 its reverse (3201011012), we get a palindrome (24212021242).

The spelling of 21011010230 in words is "twenty-one billion, eleven million, ten thousand, two hundred thirty".