21112101010110 has 64 divisors (see below), whose sum is σ = 55283191213824. Its totient is φ = 5117356185600.

The previous prime is 21112101010079. The next prime is 21112101010123. The reversal of 21112101010110 is 1101010121112.

It is a super-2 number, since 2×21112101010110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2233251 + ... + 6871070.

It is an arithmetic number, because the mean of its divisors is an integer number (863799862716).

Almost surely, 2^{21112101010110} is an apocalyptic number.

21112101010110 is an abundant number, since it is smaller than the sum of its proper divisors (34171090203714).

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

21112101010110 is a wasteful number, since it uses less digits than its factorization.

21112101010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111369.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21112101010110 its reverse (1101010121112), we get a palindrome (22213111131222).

The spelling of 21112101010110 in words is "twenty-one trillion, one hundred twelve billion, one hundred one million, ten thousand, one hundred ten".