21210201101010 has 32 divisors (see below), whose sum is σ = 51067116794880. Its totient is φ = 5637983165568.

The previous prime is 21210201101009. The next prime is 21210201101051. The reversal of 21210201101010 is 1010110201212.

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, 1129394290 + ... + 1129413069.

It is an arithmetic number, because the mean of its divisors is an integer number (1595847399840).

Almost surely, 2^{21210201101010} is an apocalyptic number.

21210201101010 is an abundant number, since it is smaller than the sum of its proper divisors (29856915693870).

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

21210201101010 is a wasteful number, since it uses less digits than its factorization.

21210201101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258807682.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21210201101010 its reverse (1010110201212), we get a palindrome (22220311302222).

The spelling of 21210201101010 in words is "twenty-one trillion, two hundred ten billion, two hundred one million, one hundred one thousand, ten".