21233124210 has 32 divisors (see below), whose sum is σ = 50980037760. Its totient is φ = 5659884288.

The previous prime is 21233124193. The next prime is 21233124257. The reversal of 21233124210 is 1242133212.

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 15 ways as a sum of consecutive naturals, for example, 66295 + ... + 216474.

It is an arithmetic number, because the mean of its divisors is an integer number (1593126180).

Almost surely, 2^21233124210 is an apocalyptic number.

21233124210 is an abundant number, since it is smaller than the sum of its proper divisors (29746913550).

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

21233124210 is a wasteful number, since it uses less digits than its factorization.

21233124210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285282.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21233124210 its reverse (1242133212), we get a palindrome (22475257422).

The spelling of 21233124210 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty-four thousand, two hundred ten".