21101211110110 has 32 divisors (see below), whose sum is σ = 38866205233152. Its totient is φ = 8244041652000.

The previous prime is 21101211110081. The next prime is 21101211110117. The reversal of 21101211110110 is 1101111210112.

It is a super-2 number, since 2×21101211110110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101211110117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24408067 + ... + 25257793.

It is an arithmetic number, because the mean of its divisors is an integer number (1214568913536).

Almost surely, 2^{21101211110110} is an apocalyptic number.

21101211110110 is a deficient number, since it is larger than the sum of its proper divisors (17764994123042).

21101211110110 is a wasteful number, since it uses less digits than its factorization.

21101211110110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907528.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 21101211110110 its reverse (1101111210112), we get a palindrome (22202322320222).

The spelling of 21101211110110 in words is "twenty-one trillion, one hundred one billion, two hundred eleven million, one hundred ten thousand, one hundred ten".