211221220110010 has 512 divisors, whose sum is σ = 459899161758720. Its totient is φ = 68990828544000.

The previous prime is 211221220109987. The next prime is 211221220110011. The reversal of 211221220110010 is 10011022122112.

It is a super-2 number, since 2×211221220110010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211221220110011) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 126555553456 + ... + 126555555124.

It is an arithmetic number, because the mean of its divisors is an integer number (898240550310).

Almost surely, 2^{211221220110010} is an apocalyptic number.

211221220110010 is an abundant number, since it is smaller than the sum of its proper divisors (248677941648710).

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

211221220110010 is a wasteful number, since it uses less digits than its factorization.

211221220110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082.

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

Adding to 211221220110010 its reverse (10011022122112), we get a palindrome (221232242232122).

It can be divided in two parts, 2112212 and 20110010, that added together give a palindrome (22222222).

The spelling of 211221220110010 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred twenty million, one hundred ten thousand, ten".