21210120210010 has 32 divisors (see below), whose sum is σ = 38273782345344. Its totient is φ = 8462835864000.

The previous prime is 21210120210007. The next prime is 21210120210049. The reversal of 21210120210010 is 1001202101212.

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, 5343720 + ... + 8424700.

It is an arithmetic number, because the mean of its divisors is an integer number (1196055698292).

Almost surely, 2^{21210120210010} is an apocalyptic number.

21210120210010 is a deficient number, since it is larger than the sum of its proper divisors (17063662135334).

21210120210010 is a wasteful number, since it uses less digits than its factorization.

21210120210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082710.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21210120210010 its reverse (1001202101212), we get a palindrome (22211322311222).

It can be divided in two parts, 212101202 and 10010, that added together give a palindrome (212111212).

The spelling of 21210120210010 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty million, two hundred ten thousand, ten".