21210223231010 has 32 divisors (see below), whose sum is σ = 41924987938944. Its totient is φ = 7661730240000.

The previous prime is 21210223231009. The next prime is 21210223231061. The reversal of 21210223231010 is 1013232201212.

It is an unprimeable number.

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, 638460911 + ... + 638494130.

It is an arithmetic number, because the mean of its divisors is an integer number (1310155873092).

Almost surely, 2^{21210223231010} is an apocalyptic number.

21210223231010 is a deficient number, since it is larger than the sum of its proper divisors (20714764707934).

21210223231010 is a wasteful number, since it uses less digits than its factorization.

21210223231010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276955210.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21210223231010 its reverse (1013232201212), we get a palindrome (22223455432222).

The spelling of 21210223231010 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-three million, two hundred thirty-one thousand, ten".