21212112313010 has 32 divisors (see below), whose sum is σ = 40570645001472. Its totient is φ = 7957518232320.

The previous prime is 21212112313003. The next prime is 21212112313031. The reversal of 21212112313010 is 1031321121212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220406186 + ... + 220502405.

It is an arithmetic number, because the mean of its divisors is an integer number (1267832656296).

Almost surely, 2^{21212112313010} is an apocalyptic number.

21212112313010 is a deficient number, since it is larger than the sum of its proper divisors (19358532688462).

21212112313010 is a wasteful number, since it uses less digits than its factorization.

21212112313010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440908898.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21212112313010 its reverse (1031321121212), we get a palindrome (22243433434222).

The spelling of 21212112313010 in words is "twenty-one trillion, two hundred twelve billion, one hundred twelve million, three hundred thirteen thousand, ten".