21210122011210 has 64 divisors (see below), whose sum is σ = 41913161385984. Its totient is φ = 7663879368000.

The previous prime is 21210122011159. The next prime is 21210122011213. The reversal of 21210122011210 is 1211022101212.

It is not an unprimeable number, because it can be changed into a prime (21210122011213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52170379 + ... + 52575361.

It is an arithmetic number, because the mean of its divisors is an integer number (654893146656).

Almost surely, 2^{21210122011210} is an apocalyptic number.

21210122011210 is a deficient number, since it is larger than the sum of its proper divisors (20703039374774).

21210122011210 is a wasteful number, since it uses less digits than its factorization.

21210122011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408019.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210122011210 its reverse (1211022101212), we get a palindrome (22421144112422).

The spelling of 21210122011210 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-two million, eleven thousand, two hundred ten".